The K Desktop Environment

4.2. Composer Tab

The Phrases section lets you define the automatically generated lines added to message replies, forwarded messages, and quoted text. There are special %-denoted characters that will insert certain values. These are shown at the top of the Phrases section: %D to insert the date, %S to insert the subject, %F to insert the sender, and %% to insert a percent sign, %_ inserts a space. The Indentation field contains the character that will denote quoted text (you will probably want to use the default).

Automatically append signature and Automatically sign messages using PGP let you toggle whether to automatically include your signature and PGP signature in all of your messages by default. Word wrap at column lets you turn word wrapping on and off in the Composer window and lets you set the column at which words will be wrapped.

Use smart quoting will break long lines but will keep the quoting correct (e.g. the ">" will always be at the start of the line).