TY's text counterpart

• Loci: Abbr
• Letters from a polite texter
• Becomes wearisome
• Texting counterpart of "TY"
• Part of many a texting request
• Abbr. of politeness
• Polite admonition in a text msg
• Polite online letters
• Some nouns, briefly

Wiktionary Word definitions in Wiktionary
abbr. please