From the README: > Vim itself already has support for something similar in its optional mswin.vim config file. However it still assumes the necessity of Normal

From the README: > Vim itself already has support for something similar in its optional mswin.vim config file. However it still assumes the necessity of Normal Mode and such heritage as SHIFT+INSERT-style combinations. This plugin however, attempts to avoid Normal Mode unless absolutely necessary, say for interacting with the NERDTree buffer, wherein Insert Mode has no purpose.