In the following lines what does **, *.*, and ~* stand for? *.* = all files? ** = all folders? ~*= ???
<pattern>$/Project/Current/Product/**/ProjectInfo.*</pattern>
<pattern>$/Project/Current/Build/**/*.*</pattern>
<pattern>$/Project/Current/Product/**/~*</pattern>
<pattern>$/Project/Current/Product/**/ProjectInfo.*</pattern>
<pattern>$/Project/Current/Build/**/*.*</pattern>
<pattern>$/Project/Current/Product/**/~*</pattern>