The subroutine RUMT has several modes of operation, but only one of these is possible while using it in other programs. For an input of the orbital quantum number l (input argument LL) and the term number from Table 1 (input argument KNT), it finds the shell's total quasispin Q multiplied by two (output argument LQ), the shell's total spin S multiplied by two (output argument LS) and the shell's total angular momentum L multiplied by two (output argument LS). It finds these characteristics for s-, p - and d- shells. A COMMON blocks /MT/ is needed by this program, which is defined in BLOCK DATA TERMLS.