LN$SDA,UTILITIES, a SDA extension to display logical names LN$SDA is a SDA extension (using the API first documented for VMS V7.2) which displays logical names. Logical names can be specified by name or by value and optionally using wildcards (normal VMS wildcards * and %). The logical name tables of the currently selected process in SDA and/or shared tables are searched. LN$SDA can be used to look at a crash dump or at a running system. See AAAREADME.TXT for more information.