|SL210000 || Up Shoe Null (APL) || {{unichar|235D|APL FUNCTIONAL SYMBOL UP SHOE JOT}} ||
|-
|SL220000 || Up Tack (APL){{efn |name=tacks}} || {{unichar|22A4|DOWN TACK}}{{efn|NamingThere conventionare two naming conventions (which way around "up" and "down" are, and which way around "left" and "right" are) offor tack characters, the "London" and "Bosworth" conventions.<ref name="dickey">{{cite web |url=https://www.math.uwaterloo.ca/~ljdickey/apl-rep/tables/note1.html |last=Dickey |first=Leroy J. |title=The Naming of Tack Symbols |website=University of Waterloo}}</ref> Which convention is used differs between IBM and Unicode,. andNaming also differs between composite Unicode characters intended solely for APL (which match IBM naming) versus plain tacks also intended for other applications.<ref name="dickey"/> The documentation for Dyalog APL notes that the Unicode naming for composite tacks (and thus the IBM naming for all tacks), which follows the the lesser-used "Bosworth" convention,<ref name="dickey"/> runs contrary to convention in the APL community.{{refn|name=dyalogsheet}} |name=tacks}} ||
