Of course you can't do any of the following with the trial version (jeez)
This demo version has the following restrictions:
Saving is disabled
Printing is disabled
Putting data on the Windows clipboard is disabled
File | Send (email) is disabled
Export audio is disabled
ACID file export is disabled
Export video is disabled
Offline audio and MIDI effects (i.e., Process | Audio Effects, MIDI Effects) is disabled
Integrated time/pitch stretching of audio is disabled
Saving effect presets is disabled
Bounce to Clip(s) is disabled
Bounce to Track(s) is disabled
Groove Quantize is disabled
Launching 3rd party wave editors from the Tools menu is disabled
Tools | Clean Audio Folder is disabled
I guess you can still record but, uhh, what can you do with it to test it out???
DD