Insert (substring)

In BR, in order to insert one string into another, we must use the desired starting subscript and ZERO as the ending subscript:

00010 dim a$*255
00020 let a$ = "beginning end"
00030 let a$(10:0) = " middle " ! here we are inserting 6 characters (" middle ") starting at character 10 of string a$
00040 print a$

Note that there is a difference between inserting characters and replacing characters in a string. When replacing, some characters from the original string are removed. When inserting, no characters from the original string are removed.