Notepad will work. A "place names" file is built with any word or text processor that can save in "plain text" format. The how to is below.
From page 78 of the current v4 user guide ...
View Place Names [Map menu item used to turn "place names" on or off.]
Shortcut. Press the F6 key.
Loads a specially formatted text file containing place names or other text information to be
displayed on a map. This feature is intended to allow an expert user to create and display
optional text information on a TacOps map. Selection of this menu item will cause the
information in this file (if the file is present) to be embedded into the battle map inside yellow
rectangles. A second selection of this menu item will remove the place names from the map
display.
The file name of a place names file must use the following convention: "MapXXXc.names"
where "XXX" represents the three digit number of the companion map. For example a place
names file for "Map001c.map" would be titled "Map001c.names".
The text contents of the place name file must be saved as plain text and must follow the
following convention exactly for each line of text: six digit UTM coordinate (using only number
characters), one tab character, text to be displayed, carriage return. The UTM coordinate is not
displayed – it is only used by the program to determine where to place the lower left corner of
the yellow rectangle that will contain the rest of the line of text. The tab character is not
displayed.
