add help.windows.txt

help.windows.txt

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+Use the following shell commands:
+
+cd	change directory [dir_name]
+cat	print file [file_name]
+deleteme	delete all of your data associated with foobar
+edit	open file in editor [file_name]
+feedback	provide feedback on foobar
+less	print a file a page at a time [file_name]
+ls	list directory contents [dir_name]
+request	request new challenge
+status	print progress
+submit	submit final solution file for assessment [file_name]
+verify	runs tests on solution file [file_name]
+
+Keyboard help:
+
+Ctrl + S	save the open file [when editor is focused]
+Ctrl + E	close the editor [when editor is focused]
+
+Toggle between the editor and terminal using ESC followed by TAB, then activate with ENTER.