In the Calamus SL98 text module the settings in the text ruler dialog are not accepted.
This fault was fixed soon after the first release of Calamus SL98 (5.1.1998). On our download pages you will find the text module in the version dated 12.1.1998, in which all settings of the text ruler dialog are accepted correctly.
In SL2000 and later these problems have been rectified.