Find and replace
sdlBasic editor has options to allow searching for words, regular expressions, matching case, in the reverse direction, wrapping around the end of the document. C style backslash escapes which are listed in the command line arguments section, may be used to search and replace control characters.
Replacements can be made individually, over the current selection or over the whole file. When regular expressions are used tagged subexpressions can be used in the replacement text. Regular expressions will not match across a line end.