Using Siebel Tools > Customizing Your Siebel Tools Environment >

About Development Tools Options

Several customization tasks involve choosing View > Options and setting preferences in the Development Tools Options dialog box. Whenever you click OK to exit the Development Tools Options dialog box, whether you have made changes to the preferences or not, the preferences are saved in the devtools.prf file, located in the SIEBEL_TOOLS_ROOT\BIN directory of the Siebel Tools installation directory.

NOTE:  If the behavior of the Tools environment is not consistent with the preferences you set, your devtools.prf file may be corrupted. Choose View > Options, reset preferences if necessary, then click OK. By doing so, the devtools file is regenerated. Alternatively, if you delete the devtools.prf file, then relaunch Tools, the default preferences are reset.