CONVERT SUBSYSTEM - character options.

Begin(<char>): Begin a new line (i.e. record) immediately after <char>. <char> is not considered part of the text. Multiple occurrences of <char> are treated as a single occurrence and any occurrences at the beginning or end of a line are simply deleted.
Columns(i-j): Delete all characters in a line except those located between positions "i" and "j" inclusive. If the created "column" doesn"t extend as far as position "j", it is blank-filled to that position.
LOWEr: Convert the output (if "ascii", "oldasc" or "aprint") to all lower case.
SQUEeze: Replace any occurrence of two or more blanks with a single blank.
Tab(<char>,i,j--;<char>,i,j--;--): This expands tabs according to <char> (default: ascii tab), and positions 'i', 'j' etc (default: Gmap tabs). Normally every occurrence of <char> is expanded except if it is encountered beyond the last tab-stop. There is no limit to the number of tab characters or tab-stops allowed.
TRAIl: Delete all trailing blanks on a line (record).
Untab(<char>,i,j--;<char>,i,j--;--): Insert tab characters (equivalent to the FRED Command "zi") replacing strings of blanks ending at positions 'i', 'j' etc. by the tab character. The defaults are the same as the "tab" option, and again, there are no limits to the number of tab characters or tab-stops allowed.
UPPEr: This is the same as the "lower" option except that the output text is in all upper case.

The above options are performed in the following order: "begin", "tab", "column", "untab", "squeeze" and "trail".