I suppose you are using Global Mapper isn't it? Simply when you open the map files in Global mapper click over the poi, line or area and it will appear a window where it is written the attribute information. I see in GM they are written as Attribute names and Attribute values If not they should be written. Here one simple example map:
[Only registered and activated users can see links. ] - shapes+image
Look at the attributes for the lines, pois or areas: NAME - ..., GRMN_TYPE..., PHONE...and next to them it can be seen the value corresponding to the name, type, phone number etc. Every attribute and its meaning is explained in "Features Types" in the manual. That is all.
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