MaxView is a secure online project document service that enables you to keep your team members up to date with all the documents related to a construction project. MaxView is a single application that includes multiple product levels. MaxView uses .CAL and .TIF files directly... (
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The program works with the following extensions: 
gp4, 
cal, 
grp, 
msif, 
maxfa, 
maxfr, 
maxml, 
maxmu, 
maxrp, 
maxtk, 
maxev and 
maxzip