: This seems to denote a specific type of file or data format used possibly in land surveying, geographic information systems, or a similar domain. The "TXT" suggests it's a plain text file, which can be opened with any text editor.
Raw satellite data is rarely usable the moment it is beamed down to a ground station. It contains "noise"—atmospheric interference, sensor errors, or geometric distortions. The term filedot to ls land 8 lsn 021 txt fixed
: Financial or administrative systems often move data in "fixed" text formats to ensure compatibility with older mainframes. : This seems to denote a specific type