Item 1. Business

Founded in 1959, Generac Holdings Inc. (the Company or Generac) is a leading global designer and manufacturer of a wide range of power generation equipment and other engine powered products serving the residential, light commercial and industrial markets. Power generation is our primary focus, which differentiates us from our main competitors that also have broad operations outside of the power equipment market. As the only significant market participant focused predominantly on these products, we have one of the leading market positions in the power equipment market in North America and an expanding presence internationally. We believe we have one of the widest ranges of products in the marketplace, including residential, commercial and industrial standby generators; as well as portable and mobile generators used in a variety of applications. Other engine powered products that we design and manufacture include light towers which provide temporary lighting for various end markets; commercial and industrial mobile heaters and pumps used in the oil & gas, construction and other industrial markets; and a broad product line of outdoor power equipment for residential and commercial use.

We design, manufacture, source and modify engines, alternators, transfer switches and other components necessary for our products, which are fueled by natural gas, liquid propane, gasoline, diesel and Bi-Fuel™. Our products are available globally through a broad network of independent dealers, distributors, retailers, wholesalers and equipment rental companies under a variety of brand names. We also sell direct to certain national and regional account customers, as well as to individual consumers, that are the end users of our products.

We have a significant market share in the residential and light commercial markets for automatic standby generators, which we believe remain under-penetrated in the marketplace. We also have a leading market position for portable generators used in residential, light construction and recreational applications. We believe that our leading market position is largely attributable to our strategy of providing a broad product line of high-quality, innovative and affordable products through our extensive and multi-layered distribution network to whom we offer comprehensive support and programs from the factory. In addition, we are a leading provider of light towers, mobile generators, flameless heaters, outdoor power equipment and industrial diesel generators ranging in sizes up to 3,250kW.

Over the years, we have executed a number of acquisitions that support our strategic plan. A summary of the recent acquisitions can be found in Note 1, “Description of Business,” to the consolidated financial statements in Item 8 of this Annual Report on Form 10-K.

Reportable Segments

The Company has two reportable segments for financial reporting purposes – Domestic and International. The Domestic segment includes the legacy Generac business and the impact of acquisitions that are based in the United States, all of which have revenues that are substantially derived from the U.S. and Canada. The International segment includes the Ottomotores, Tower Light, Pramac and Motortech acquisitions, all of which have revenues that are substantially derived from outside the U.S. and Canada. Both reportable segments design and manufacture a wide range of power generation equipment and other engine powered products, which are discussed in further detail below in the context of our product classes. Refer to Note 6, “Segment Reporting,” to the consolidated financial statements in Item 8 of this Annual Report on Form 10-K for further information.

P****roducts

We design and manufacture stationary, portable and mobile generators with single-engine outputs ranging between 800W and 3,250kW. We have the ability to expand the power range for certain stationary generator solutions to much larger multi-megawatt systems through an integrated paralleling configuration called Modular Power Systems (MPS). Other engine powered products that we design and manufacture include light towers, mobile heaters, power washers and water pumps, along with a broad line of outdoor power equipment. We classify our products into three categories based on similar range of power output geared for varying end customer uses: Residential products, Commercial & Industrial (C&I) products and Other products. The following summary outlines our portfolio of products, including their key attributes and customer applications.

Residential P__roducts

Our residential automatic standby generators range in output from 6kW to 60kW, with manufacturer's suggested retail prices (MSRPs) from approximately $1,949 to $16,199. These products operate on natural gas, liquid propane or diesel and are permanently installed with an automatic transfer switch, which we also manufacture. Air-cooled engine residential standby generators range in outputs from 6kW to 22kW, are available in steel and aluminum enclosures and serve as an emergency backup for small to medium-sized homes. Liquid-cooled engine generators serve as emergency backup for larger homes and small businesses and range in output from 22kW to 60kW. We also provide a cellular-based remote monitoring system for home standby generators called Mobile Link™, which allows our customers to check the status of their generator conveniently from a desktop PC, tablet computer or smartphone, and also provides the capability to receive maintenance and service alerts.

We provide a broad product line of portable and inverter generators that are fueled predominantly by gasoline, with certain models running on propane and diesel fuel, which range in size from 800W to 17.5kW. These products serve as an emergency home backup source of electricity and are also used for construction and recreational purposes. Our portable generators are targeted at homeowners, with price points ranging between the consumer value end of the market through the premium homeowner market; at professional contractors, starting at the value end through the premium contractor segment; and at the recreational market with our inverter product line. In addition, we offer manual transfer switches to supplement our portable generator product offering.

We provide a broad product line of engine driven power washers for residential and commercial use, fueled by gasoline, which range in pressure from 2,500 to 4,200 PSI. Additionally, we offer a product line of water pumps built to meet the water removal needs of homeowners, farmers, construction crews and other end-user applications.

Further, we provide a broad product line of outdoor power equipment that includes trimmer & brush mowers, log splitters, lawn & leaf vacuums, and chipper shredders for the property maintenance needs of larger-acreage residences, commercial properties, municipalities and farms. These products are largely sold in North America through catalogs, on-line, retail hardware stores and outdoor power equipment dealers primarily under the DR® brand name.

Residential products comprised 52.0%, 53.5% and 51.2%, respectively, of total net sales in 2017, 2016 and 2015.

Commercial & Industrial P****roducts

We offer a full line of C&I generators fueled by diesel, natural gas, liquid propane and Bi-Fuel™. We believe we have one of the broadest product offerings in the industry with power outputs ranging from 10kW up to 3,250kW.

Our light-commercial standby generators include a full range of affordable systems from 22kW to 150kW and related transfer switches, providing three-phase power sufficient for most small and mid-sized businesses such as grocery stores, convenience stores, restaurants, gas stations, pharmacies, retail banks, small health care facilities and other small-footprint retail applications. Our light-commercial generators run on natural gas, liquid propane and diesel fuel.

We manufacture a broad product line of standard and configured stationary generators and related transfer switches for various industrial standby, continuous-duty and prime rated applications. Our single-engine industrial generators range in output from 10kW up to 3,250kW, which includes stationary and containerized packages, with our MPS technology extending our product range up to much larger multi-megawatt systems through an integrated paralleling configuration. We offer four fuel options for our industrial generators, including diesel, natural gas, liquid propane or Bi-Fuel™. Bi-Fuel™ generators operate on a combination of both diesel and natural gas to allow our customers the advantage of multiple fuel sources and extended run times. Our industrial standby generators are primarily used as emergency backup for larger applications in the healthcare, telecom, datacom, commercial office, municipal and manufacturing markets.

Our MPS technology combines the power of several smaller generators to produce the output of a larger generator, providing our customers with redundancy and scalability in a cost-effective manner. For larger industrial applications, our MPS products offer customers an efficient, affordable way to scale their standby power needs, and also offers superior reliability given its built-in redundancy which allows individual units to be taken off-line for routine maintenance while retaining coverage for critical circuits.

We provide a broad product line of light towers, mobile generators and mobile heaters, which provide temporary lighting, power and heat for various end markets, such as road and commercial construction, energy, mining, military and special events. We also manufacture commercial mobile pumps which utilize wet and dry-priming pump systems for a wide variety of wastewater applications.

The acquisition of Motortech in January 2017 added gaseous-engine control systems and accessories which are sold primarily to European gas-engine manufacturers and to aftermarket customers.

C&I products comprised 41.0%, 38.6% and 41.6% respectively, of total net sales in 2017, 2016 and 2015.

Other P****roducts

Our “Other Products” category includes aftermarket service parts to our dealers, product accessories and proprietary engines to third-party original equipment manufacturers (OEMs).

Other products comprised 7.0%, 7.9% and 7.2%, respectively, of total net sales in 2017, 2016 and 2015.

Distribution Channels and C****ustomers

We distribute our products through a variety of different distribution channels to increase awareness of our product categories and brands, and to ensure our products reach a broad customer base. This distribution network includes independent residential dealers, industrial distributors and dealers, national and regional retailers, e-commerce merchants, electrical and HVAC wholesalers (including certain private label arrangements), catalogs, equipment rental companies and equipment distributors. We also sell direct to certain national and regional account customers, as well as to individual consumers, who are the end users of our products.

We believe our distribution network is a competitive advantage that has strengthened over the years as a result of adding, expanding and developing the various distribution channels through which we sell our products. We offer a broad set of tools, programs and factory support to help our distribution partners be successful. Our network is well balanced with no customer providing more than 6% of our sales in 2017.

Our overall dealer network located in the United States, Canada and Latin America, is the industry's largest network of factory direct independent generator contractors in North America. We expanded our dealer network in recent years on a global basis with the acquisition of Pramac in March 2016, particularly in Europe, the Middle East and Asia/Pacific regions.

Our residential/light commercial dealer network sells, installs and services our residential and light commercial products to end users. We have increased our level of investment in recent years by focusing on a variety of initiatives to more effectively market and sell our home standby products and better align our dealer network with Generac.

Our industrial network consists of a combination of primary distributors as well as a support network of dealers serving the United States and Canada. The industrial distributors and dealers provide industrial and commercial end users with ongoing sales and product support. Our industrial distributors and dealers maintain the local relationships with commercial electrical contractors, specifying engineers and national account regional buying offices. Over the past several years, we have been expanding our dealer network globally through acquisitions and organic means, in order to expand our international sales opportunities.

Our retail distribution network includes thousands of locations across the globe and includes a variety of regional and national home improvement chains, retailers, clubs, buying groups and farm supply stores. These physical retail locations are supplemented by a growing presence of e-commerce retailers, along with a number of catalog retailers. This network primarily sells our residential standby, portable and light-commercial generators, as well as our other engine powered tools. The placement of our products at retail locations drives significant awareness for our brands and the automatic home standby product category.

Our wholesaler network distributes our residential and light-commercial generators, and consists of selling branches of both national and local distribution houses for electrical and HVAC products.

On a selective basis, we have established private label and licensing arrangements with third party partners to provide residential, light-commercial and industrial generators. These partners include leading home equipment, electrical equipment and construction machinery companies, each of which provides access to incremental channels of distribution for our products.

The distribution for our mobile products includes international, national, regional and specialty equipment rental companies, equipment distributors and construction companies, which primarily serve non-residential building construction, road construction, energy markets and special events. In addition, international acquisitions over the past several years have provided access to numerous independent distributors in over 150 countries.

We sell direct to certain national and regional account customers that are the end users of our products covering a number of end market verticals, including telecommunication, retail, banking, convenience stores, grocery stores and other light commercial applications. Additionally, our residential products are sold direct to individual consumers, who are the end users of the product.

Business Strategy

We have been executing on our “Powering Ahead” strategic plan, which serves as the framework for the significant investments we have made to capitalize on the long-term growth prospects of Generac. As we continue to move the Powering Ahead plan into the future, we are focused on a number of initiatives that are driven by the same four key objectives:

Growing the residential standby generator market. As the leader in the home standby generator market, it is incumbent upon us to continue to drive growth and increase the penetration rate of these products in households across the United States and Canada. Central to this strategy is to increase the awareness, availability and affordability of home standby generators. Ongoing power outage activity, combined with expanding our residential/light commercial dealer base and overall distribution in affected regions, are key drivers in elevating the awareness of home standby generators over the long term. We intend to continue to supplement these key growth drivers by focusing on a variety of strategic initiatives targeted toward generating more sales leads, improving close rates and reducing the total overall cost of a home standby system. In addition, we intend to continue to focus on innovation in this growing product category and introduce new products into the marketplace. With only approximately 4.0% penetration of the addressable market of homes in the United States (which we define as single-family detached, owner-occupied households with a home value of over $100,000, as defined by the U.S. Census Bureau's 2015 American Housing Survey for the United States), we believe there are opportunities to further penetrate the residential standby generator market.

Gaining commercial and industrial market share. Our growth strategy for commercial and industrial power generation products is focused on incremental market share gains. Key to this objective are efforts to leverage our expanding platform of diesel and natural gas offerings by better optimizing our industrial distribution partners’ capabilities to market, sell and support these products. Specifically, we continue to pursue certain initiatives to expand our distributors’ interactions with engineering firms and electrical contractors responsible for specifying and selecting our products within C&I power generation applications. We are also committed to a number of sales process initiatives and go-to-market strategies to increase market visibility and improve the overall specification rates for our products which should increase quoting activity and close rates for our industrial distributors.

Lead with gas power generation products. We will attempt to gain incremental market share within commercial and industrial markets through our leading position in the growing market for cleaner burning, more cost effective natural gas fueled standby power solutions. While still a smaller portion of the overall C&I market, we believe demand for these products continues to increase at a faster rate than traditional diesel fueled generators as a result of their lower capital investment and operating costs. We also intend to explore new gaseous generator related market opportunities, including increasing our product capabilities for continuous-duty and prime rated applications, by leveraging our deep technical capabilities for gaseous-fueled products, leading position for natural gas standby generators and growing market acceptance for these products. As part of this strategy, we plan to continue to expand our natural gas product offering into larger power nodes to take advantage of the continuing shift from diesel to natural gas generators.

Expanding global presence. We have increased our revenues shipped outside the U.S. and Canada in recent years, with sales outside this region accounting for approximately 22% of our revenues during 2017, as compared to approximately 20% and 10% in 2016 and 2015, respectively. This increase is largely the result of acquisitions made that comprise our International segment – Ottomotores, Tower Light, Pramac and Motortech. These businesses have significantly increased our global presence by adding product, manufacturing and distribution capabilities that serve local markets around the world, and have resulted in us becoming a leading global player in the markets for backup power and mobile power equipment. As we look forward, we intend to leverage our increased international footprint attained from these acquisitions to serve the over $13 billion annual market for power generation equipment outside the U.S. and Canada. We also intend to improve the profit margins of our International segment by executing on several revenue and cost synergies, and driving organic growth in existing markets with additional investment and focus, including the expanding opportunity for global gaseous-fueled products. We will continue to evaluate other opportunities to expand into additional regions of the world through both organic initiatives and potential acquisitions.

We believe the investments we have made to date, due in part to our Powering Ahead strategy, have helped to capitalize on the macro, secular growth drivers for our business and are an important part of our efforts to diversify and globalize our business. See “Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations – Business Drivers and Trends” for additional drivers that influence demand for our products and other trends affecting the markets that we serve.

Manufacturing

We operate numerous manufacturing plants, distribution facilities and inventory warehouses located throughout the world. We maintain inventory warehouses in the United States that accommodate material storage and rapid response requirements of our customers. See “Item 2 – Properties” for additional details regarding the locations and activities of our principal operations.

In recent years, we have added manufacturing capacity through investments in automation, improved utilization and the expansion of our manufacturing footprint through organic means as well as through acquisitions. We believe we have sufficient capacity to achieve our business goals for the near-to-intermediate term.

Research and D****evelopment

Our primary focus on power generation equipment and other engine powered products drives technological innovation, specialized engineering and manufacturing competencies. Research and development (R&D) is a core competency and includes a staff of over 350 engineers working on numerous projects. Our total R&D expense was $42.9 million, $37.2 million and $32.9 million for the years ended December 31, 2017, 2016 and 2015, respectively. R&D is conducted at various facilities worldwide, including a recent expansion of our advanced engineering labs at our corporate headquarters and the addition of a Chinese technology center in Suzhou, China. These activities are focused on developing new technologies and product enhancements as well as maintaining product competitiveness by improving manufacturing costs, safety characteristics, reliability and performance while ensuring compliance with regulatory standards. We have over 30 years of experience using natural gas engines and have developed specific expertise with fuel systems and emissions technology. In the residential and light commercial markets, we have developed proprietary engines, cooling packages, controls, fuel systems and emissions systems. We believe that our expertise in engine powered equipment gives us the capability to develop new products that will allow continued diversification in our end markets.

Intellectual Property

We are committed to research and development, and we rely on a combination of patents and trademarks to establish and protect our proprietary rights. Our patents protect certain features and technologies we have developed for use in our products including fuel systems, air flow, electronics and controls, noise reduction and air-cooled engines. We believe the existence of these patents and trademarks, along with our ongoing processes to register additional patents and trademarks, protect our intellectual property rights and enhance our competitive position. We also use proprietary manufacturing processes that require customized equipment.

Suppliers of Raw M****aterials

Our primary raw material inputs are steel, copper and aluminum, all of which are purchased from third parties and, in many cases, as part of machined or manufactured components. We have developed an extensive network of reliable suppliers in the United States and internationally. Our Strategic Global Sourcing (SGS) function continuously evaluates the quality and cost structure of our products and assesses the capabilities of our supply chain. Components are sourced accordingly based on this evaluation. Our supplier quality engineers conduct on-site audits of major supply chain partners and help to maintain the reliability of critical sourced components.

Competition

The market for power generation equipment and other engine powered products is competitive. We face competition from a variety of large diversified industrial companies as well as smaller generator manufacturers, along with mobile equipment and engine powered tools providers, both domestic and internationally. However, specifically in the generator market, most of the traditional participants compete on a more specialized basis, focused on specific applications within their larger diversified product mix. We are the only significant market participant with a primary focus on power equipment with a core emphasis on standby, portable and mobile generators with broad capabilities across the residential, light-commercial and industrial markets. We believe that our engineering capabilities and core focus on generators provide us with manufacturing flexibility and enables us to maintain a first-mover advantage over our competition for product innovation. We also believe our broad product offering, diverse distribution model and strong factory support provide additional advantages as well.

A summary of the primary competitors across our main product classes are as follows:

Residential products – Kohler, Briggs & Stratton, Cummins, Honda, Champion, Techtronics International, Husqvarna and Ariens, along with a number of smaller domestic and foreign competitors; certain of which also have broad operations in other manufacturing businesses.

C&I p****roducts – Caterpillar, Cummins, Kohler, MTU, Stemac, IGSA, Wacker, MultiQuip, Terex, Doosan, Briggs & Stratton (Allmand), Atlas Copco and Himonisa; certain of which focus on the market for diesel generators as they are also diesel engine manufacturers. Also, we compete against other regional packagers that serve local markets throughout the world.

In a continuously evolving market, we believe our scale and broad capabilities make us well positioned to remain competitive. We compete primarily on the basis of brand reputation, quality, reliability, pricing, innovative features, breadth of product offering, product availability and factory support.

Employees

As of December 31, 2017, we had 4,556 employees (4,017 full time and 539 part-time and temporary employees). Of those, 2,393 employees were directly involved in manufacturing at our manufacturing facilities.

Domestically, we have had an “open shop” bargaining agreement for the past 50 years. The current agreement, which expires October 17, 2021, covers our Waukesha and Eagle, Wisconsin facilities. Additionally, our plants in Mexico, Italy and Brazil are operated under various local or national union groups. Our other facilities are not unionized.

Regulation, including Environmental Matters

As a manufacturing company, our operations are subject to a variety of federal, state, local and foreign laws and regulations covering environmental, health and safety matters. Applicable laws and regulations include those governing, among other things, emissions to air, discharges to water, noise and employee safety, as well as the generation, handling, storage, transportation, treatment, and disposal of waste and other materials. In addition, our products are subject to various laws and regulations relating to, among other things, emissions and fuel requirements, as well as labeling and marketing.

Our products sold in the United States are regulated by the U.S. Environmental Protection Agency (EPA), California Air Resources Board (CARB) and various other state and local air quality management districts. These governing bodies continue to pass regulations that require us to meet more stringent emission standards, and all of our engines and engine-driven products are regulated within the United States and its territories. In addition, certain products in the United States are subject to safety standards as established by various other standards and rule making bodies, or state and local agencies, including the U.S. Consumer Product Safety Commission (CPSC). Other countries have varying degrees of regulation depending upon product application and fuel types.

Available Information

The Company’s principal executive offices are located at S45 W29290 Highway 59, Waukesha, Wisconsin, 53189 and the Company’s telephone number is (262) 544-4811. The Company’s annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and amendments to those reports are available free of charge through the “Investors” portion of the Company’s web site, www.generac.com, as soon as reasonably practical after they are filed with the Securities and Exchange Commission (SEC). The SEC maintains a web site, www.sec.gov, which contains reports, proxy and information statements, and other information filed electronically with the SEC by the Company. The information provided on these websites is not part of this report and is therefore not incorporated herein by reference.

Executive O****fficers

The following table sets forth information regarding our executive officers:

Name		Age		Position
Aaron P. Jagdfeld		46		President, Chief Executive Officer and Chairman
York A. Ragen		46		Chief Financial Officer
Russell S. Minick		57		Chief Marketing Officer
Jeffrey Mueller		49		President / General Manager – Consumer Power
Erik Wilde		43		Executive Vice President, Industrial, Americas
Roger F. Pascavis		57		Executive Vice President, Strategic Global Sourcing
Patrick Forsythe		50		Executive Vice President, Global Engineering

Aaron P. Jagdfeld has served as our Chief Executive Officer since September 2008, as a director since November 2006 and was named Chairman in February 2016. Prior to becoming Chief Executive Officer, Mr. Jagdfeld worked for Generac for 15 years. He began his career in the finance department in 1994 and became our Chief Financial Officer in 2002. In 2007, he was appointed President and was responsible for sales, marketing, engineering and product development. Prior to joining Generac, Mr. Jagdfeld worked in the audit practice of the Milwaukee, Wisconsin office of Deloitte and Touche. Mr. Jagdfeld holds a Bachelor of Business Administration in Accounting from the University of Wisconsin-Whitewater.

York A. Ragen has served as our Chief Financial Officer since September 2008. Prior to becoming Chief Financial Officer, Mr. Ragen held Director of Finance and Vice President of Finance positions at Generac. Prior to joining Generac in 2005, Mr. Ragen was Vice President, Corporate Controller at APW Ltd., a spin-off from Applied Power Inc., now known as Actuant Corporation. Mr. Ragen began his career in the Audit division of Arthur Andersen's Milwaukee, Wisconsin office. Mr. Ragen holds a Bachelor of Business Administration in Accounting from the University of Wisconsin-Whitewater.

Russell S. Minick began serving as our Chief Marketing Officer in August 2016. Prior to this appointment he served as Executive Vice President, Residential Products since October 2011, with this responsibility being expanded in January 2014 to Executive Vice President, Global Residential Products and to Executive Vice President, North America in September 2014. Prior to joining Generac, Mr. Minick was President & CEO of Home Care Products for Electrolux from 2006 to 2011, President of The Gunlocke Company at HNI Corporation from 2003 to 2006, Senior Vice President of Sales, Marketing and Product Development at True Temper Sports from 2002 to 2003, and General Manager of Extended Warranty Operations for Ford Motor Company from 1998 to 2002. Mr. Minick is a graduate of the University of Northern Iowa, and holds a degree in marketing.

Jeffrey Mueller began serving as our President / General Manager – Consumer Power in November 2017. Mr. Mueller was Group President for Broan-Nutone from 2014 prior to joining Generac. Prior to his time at Broan, Mr. Mueller was at Kohler Company from 1991 where he held various U.S. and international executive-level positions in the Kitchen & Bath & Interiors Group, including President of Kohler’s faucet business globally. He is a Marquette University alumnus where he earned an Executive MBA with an international focus and a Bachelor of Science degree in Mechanical Engineering.

Erik Wilde began serving as our Executive Vice President, Industrial, Americas in July 2016. Mr. Wilde was Vice President and General Manager of the Mining Division for Komatsu America Corp. from 2013 until he joined Generac. Prior to that role, he held leadership positions as Vice President of the ICT Business Division and Product Marketing back to 2005. Mr. Wilde holds a Bachelor of Business Administration in Management from Boise State University and an M.B.A. from Keller Graduate School of Management.

Roger Pascavis has served as our Executive Vice President, Strategic Global Sourcing since March 2013. Prior to becoming Executive Vice President of Strategic Global Supply, he served as the Senior Vice President of Operations since January 2008. Mr. Pascavis joined Generac in 1995 and has served as Director of Materials and Vice President of Operations. Prior to joining Generac, Mr. Pascavis was a Plant Manager for MTI in Waukesha, Wisconsin. Mr. Pascavis holds a B.S. in Industrial Technology from the University of Wisconsin-Stout and an M.B.A. from Lake Forest Graduate School of Management.

Patrick Forsythe has served as our Executive Vice President of Global Engineering since re-joining Generac in July 2015. Mr. Forsythe was Vice President, Global Engineering & Technology of Hayward Industries from 2008 to 2015, Vice President, Global Engineering at Ingersoll Rand Company (and the acquired Doosan Infracore International) from 2004 to 2008, and Director of Engineering at Ingersoll Rand Company from 2002 to 2004. Prior to 2002, Mr. Forsythe worked in various engineering management capacities with Generac from 1995 to 2002. Mr. Forsythe holds a Higher National Diploma (HND) in Mechanical Engineering from the University of Ulster (United Kingdom), a B.S. in Mechanical Engineering, and an M.S. in Manufacturing Management & Technology from The Open University (United Kingdom).