This is an old revision of the document!
by Richard Russell, August 2011
If you want to substitute one character for another in a string (for example you want to change every colon ':' into a dash '-') there's a more efficient and elegant way than looping through each character in turn:
REPEAT i% = INSTR(A$,":") IF i% MID$(A$,i%,1) = "-" UNTIL i%=0
This is particularly efficient in the typical case when not many characters need to be substituted.