These entries establish mappings to be applied to each line of the message body. Each line of the message body will be passed through these mappings before being incorporated into the SMS message being built. These entries take the form:
B|pattern B|replacement-text
If a line of the message body matches a pattern pattern then it will be replaced with the replacement text replacement-text. Again, very complicated, iterative mappings may be constructed using this facility. The B| in the right-hand-side of the entry may be omitted, if desired.