Lab report template

This is the LaTeX-template i use when writing lab reports quickly and easy. The lab reports I write for school are often numbered, hence the Makefile for easy numbering. That when I only need to edit content.tex and not the lab.tex. Once I written my report I simply run "make LAB=3" for lab report 3. The heading then changes to "Lab report 3" and also the resulting PDF file will be named lab3.pdf.