When I invoke the Search/Replace editor the options for what to do with the documentation is not available. They will appear if I click on swap and then go back to replace.
If the SOURCE is not a "documentable" element, then that radio group is not enabled. When Swapping, then the DESTINATION was probably documentable. Can you provide more detail as to the exact elements you were Replacing and With (this could help us figure out if/what the issue is)?
However I am unable to see the complete name of the selected code block if the name is longer than about 13 characters.
We will address that.
Is there a way that I can change the defauts for retentive memory elements? I am accustomed to C and T not being retentive and would like to be able to make this the default.
No, you cannot change the defaults, but you can definitely change the retentive range on a project by project basis. You might try exporting an empty "base" project that has your preferred Memory Configuration (i.e. size of each block, retentive range of each block). When you do the Export, in the Configuration group of the Export Options dialog, UNCHECK the System Configuration, but CHECK the MEMORY CONFIGURATION and CHECK the BUILT-INs.
Then whenever you want to create a "new project", instead of using File->New Project->Offline, do File->Import->Project and import that base export file.
I am disappointed that you did not allow more than 16 characters for the nickname in V1.1.1 
Sorry about that. We hope to address it.