These Modifiers are used so texts inserted into a template are encoded in a certain way; Most transports like XML have a list of characters to transfor to preserve their meaning.
uses StrEscAppend Mode 0
The relevant chars of the text is transformed into HTML-entities so they can be used by a client application. If you want to show the text “a<b” in a textarea it will become:
uses StrEscAppend Mode 2
If the linewraps of your text should also be converted into HTML linebreaks, use this escaper.
Add html escaping to J; some Parsers are also vulnerable to other chars; use this to get rid of some more of the dangerous chars.
Transform all chars that have a meaning in HTTP-URLs into %HexCode; use this if you want to add encoded parameters
a b c
a-z A-Z 0-9 @!_.,: