Some useful keyboard shortcuts - Regions

ms-help://MS.VSCC.2003/MS.MSDNQTR.2003FEB.1033/vsintro7/html/vxtskOutliningCode.htm

Collapse to Definitions : CTRL+M and then CTRL+O
Toggle Outlining Expansion : CTRL+M and then CTRL+M
Toggle All Outlining : CTRL+M and then CTRL+L

Hide Current    : CTRL+M and then CTRL+H
UnHide Current  : CTRL+M and then CTRL+U