float [automatically] [type] [all] [station_list]
Defines stations that are to be floated (i.e. their current location is used as an observation with a specified tolerance).
The options are identical to the fix command. The horizontal and vertical errors applied are the current defaults for the command file. Initially values of 1 metre are used for each. They are changed with the horizontal_float_error and vertical_float_error commands described below. An example of the use of these commands would be
horizontal_float_error 0.5 vertical_float_error 1.0 float horizontal bm3 stn4 float vertical stn8 stn9 float stn7 float automatically horizontal all