tokens

SEOS
SCOMMENT
SLABEL
SUNKNOWN
SHOLLERITH
SICON
SRCON
SDCON
SBITCON
SOCTCON
SHEXCON
STRUE
SFALSE
SNAME
SNAMEEQ
SFIELD
SSCALE
SINCLUDE
SLET
SASSIGN
SAUTOMATIC
SBACKSPACE
SBLOCK
SCALL
SCHARACTER
SCLOSE
SCOMMON
SCOMPLEX
SCONTINUE
SDATA
SDCOMPLEX
SDIMENSION
SDO
SDOUBLE
SELSE
SELSEIF
SEND
SENDFILE
SENDIF
SENTRY
SEQUIV
SEXTERNAL
SFORMAT
SFUNCTION
SGOTO
SASGOTO
SCOMPGOTO
SARITHIF
SLOGIF
SIMPLICIT
SINQUIRE
SINTEGER
SINTRINSIC
SLOGICAL
SNAMELIST
SOPEN
SPARAM
SPAUSE
SPRINT
SPROGRAM
SPUNCH
SREAD
SREAL
SRETURN
SREWIND
SSAVE
SSTATIC
SSTOP
SSUBROUTINE
STHEN