Pro/E. help.

Hello Sir,
I harsha from Bellary. I am unable to get the undo command in Pro/E. where I can Get the command like in other application as Ctrl+Z.
and also
1. To create an ais through cylinder it wants revolved surfaces to be selected, but we tried with exruded surfaces and it workds. As per our knowledge, revolved surfaced primarily is a centerline about which the sketch is revolved and an axis generated over the centerline. to create a axis through cylinder a new axis is created which is on the centerline it self. we are unalbe to understand the advantage of using this command.

2. I also tried to draw a curve, interesting I found with the help of equation.
create>datum >Curves>from equation. as soon as I clicked a new note pad is opened. I want to know much about this. I request you please guide me sir.
Thank you
urs
harsha.T.
===================================
Harsha.T.
S/O Mallikarjuna T
Pl no:24 -25, Ningamma Compond,
Beside of Bhaskar Reddy House
Opp. Shanti Shishu Vihar school.
Talur road,
Bellary, Karnataka,
Ph:+91 0839 254269
e-mail to: harsha123@...
harshamallikarjuna@...
url:http://www.geocities.com/harshamallikarjuna


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