Texis can be controlled with a number of internal variables. These change the behavior of Texis. You can see the manual on Server Properties for a full discussion of the various properties. They are broken down into the following categories:

• Search and optimization – defaultlike, matchmode, predopttype, ignorecase, btreecachesize, ramrows, ramlimit, bubble, optimize, nooptimize.
• Metamorph Parameters – minwordlen, keepnoise, suffixproc, prefixproc, rebuild, useequiv, inc_sdexp, inc_edexp, sdexp, edexp.
• Rank Knobs – likepproximity, likepleadbias, likeporder, likepdocfreq, likeptblfreq.
• Other ranking properties – likeprows, likeptime, likepmode, likepallmatch.
• Indexing properties – indexspace, indexblock, indexmem, addexp, delexp, lstexp, addindextmp, delindextmp, lstindextmp, infthresh, infpercent, btreethreshold, maxlinearrows, likerrows, indexaccess, indexchunk, cleanupwait.
• Locking properties – singleuser, lockmode, locksleepmethod, locksleeptime, fairlock, lockverbose.
• Miscellaneous properties – tablespace, datefmt, indirectcompat, triggermode, paramchk.