The problem is fixed, I just deleted my local folder, check outed from the svn. Now when I commit the subversion, it shows up in docs/CTN_docs/proposal folder. I added Frank's drawing of the spacer in v-3. I'll add more materials later.
The proposal for CTN lab is on SVN. The original folder was /CTNlab/docs/Proposal.
There is a little problem. I copied all the files from our original folder, and saved them in the /trunk/docs/CTN_docs. After I edited the proposal_v3, and commited, the new file showed up in the original folder. I think the copied files still carry their "svn address" with them, so when I commit them, they show up in the old folder. I'll fix this later.