• most of these are widely recognized ones but a few are ones I came up with and use myself
• /j joking
• /hj half joking
• /s sarcastic / sarcasm
• /ns not sarcastic / sarcasm
• /gen genuine / genuinely
• /f fake
• /srs serious
• /hs half serious
• /nsrs not serious
• /p platonic / platonically
• /r romantic / romantically
• /t teasing
• /nt not teasing
• /lh light-hearted
• /nm not mad or upset
• /lu little upset
• /neg negative connotation
• /pos positive connotation
• /neu neutral connotation
• /ly lyrics
• /q quote
• /nbh nobody here
• /nay not at you
• /nsb not subtweeting
• /m metaphorically
• /li literally
• /hyp hyperbole
• /rh /rt rhetorical question
• /gq /genq genuine question
• /c copypasta
• /sx /x sexual intent / connotation
• /nsx /nx non-sexual intent / connotation
• /th threat
• /cb clickbait
• /ij inside joke
• /k kin / in a kinnie way / for kinnie reasons
• /ref reference
• /i ignore / ignore me
• /dnr do not reply/respond
• /dnrd do not read
• /nj no judgment / not judging
• /aff affectionate
• /apa apathetic
• /b bitter
• /cel celebratory
• /ci caring intent
• /cj coping joke
• /co /cf comforting
• /ex exaggeration
• /f fake
• /fam familial
• /fex for example
• /gens /gs genuine suggestion
• /info information
• /jov jokingly overreacting
• /md melodramatic
• /nav not a vent
• /nbr not being rude
• /ncm not comparing
• /nf not forced
• /np no pressure
• /npa not passive aggressive
• /ny not yelling
• /op optional
• /ot off yopic
• /sym sympathetic
• /tc /ti /tic typing a tic

These are used by systems

• /ew external world
• /hsp headspace
• /iw innerworld
• /mp meatspace