In Vim's NERDTree, is there a way to open a file/dir using the space key or tab key?

Question

Currently the only way to open the file or directory currently underneath your cursor is to type o. Is there a way to also map this to space or tab?

Answer 1

let NERDTreeMapActivateNode='<space>'

should work fine. For more information see :h NERDTreeMappings.