Ah yeah, text clippings are an amazing feature. The feature was added in 1994, for System 7.0 or newer[0]. Super useful. I used to be in the midst of a conversation with someone on Hotline and want to save a snippet of text. Select it, drag to desktop, done. Saved for later as a file I can refer to or even drag & drop to some other program.

[0] http://asa.max1zzz.co.uk/English-North_American/Macintosh/Sy...