See parallel German/English sources

http://www.biol.ethz.ch/IMB/groups/berger_group/Lectures/Pra... (see pp. 3, 4 - Table of Contents, Part B)

http://www.botanik.univie.ac.at/lehre/lehrveranstaltungen/ss...

and native English sources

http://www.biochem.ucl.ac.uk/bsm/nmr/protocols/protocols/dig...

http://intranet.bpc.ac.uk/courses/download/bmsi/co/catering/...
"Prepare a separate restriction digest for each presumptive positive PCR amplification, and amplification products from control Cyclospora cayetanensis and Eimeria tenella strains."

http://www.genetics.wustl.edu/fish_lab/frank/cgi-bin/fish/pr...
"Stages in protocol
(1) Restriction digest of PAC DNA
(2) ligation of restriction digests
(3) PCR amplification of ligation products
(4) Sequencing of PCR products
(5) Trim sequence of primer and vector sequence"

http://ysp.ucdavis.edu/Research06/HuJ/default.html
"Restriction digest: Specific restriction enzymes (Stu1, Pvu1, Dra1) were added along with their respective buffers to eluted PCR reactions and incubated at 37ºC for two to three hours. Afterwards, gel electrophoresis was conducted as with a regular PCR reaction."

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Note added at 2 hrs (2006-12-14 16:18:43 GMT)
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See also http://www.methodbook.net/dna/restrdig.html and http://preuss.bsd.uchicago.edu/protocols/enzyme.html - the longer version "restriction enzyme digest(ion)" is also used.