====== Orbit Construction File ====== **OCF** stands for **__O__**rbit **__C__**onstruction **__F__**ile and is a file format (filename extension **.ocf**) developed by //Orbit Geospatial Technologies// for saving created constructions in a file. Constructions are tools are used to help the user calculate and position exact locations. === Structure === An OCF consists out of some Construction Objects.There are 2 types of construction tools : **Points and Lines**. See more on: [[224:desktop:tools:constructions_overview|]] === Reasons to use === * A construction can be temporary or can be stored in a OCF file * Since Orbit constructions are georeferenced, they remember exact positions and can be exchanged with other Orbit users. === Create and Update === * create a new construction file from : Map 2D > Tools > Cons > File Access > New Constructions. Don't forget to save your constructions as an OCF file * update a construction file from : Map 2D > Tools > Cons > File Access > Open. Don't forget to save your updates.