Shortest Windows batch file code to get first line of a file set to a variable?

set /p var= <Text.txt
echo %var%

Referenced from: http://forums.techguy.org/software-development/551867-batch-file-read-line-text.html Ironically the poster is able to get the first line but wanted to loop through the whole file!

This is just a slightly shorter version:

set/pz=<file
echo %z%