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Opa

BGL Prefixes

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At one time I had a list of the BGL Prefixes but cannot seem to locate it now in my "stack of stuff".I am referring to those seen in the Scenery / Namw / scenery subfolder and other such subfolders.Would someone fill in the blanks for me please.AB - contains ?AP - contains Airport dataFL - contains Flatten dataHL - contains ?HP - contains ?PK - contains ?RD - contains roadsRR - contains railroadsST - contains ? (possibly streams and rivers?)UT - contains ?Please correct any of the above as necessary.Thanks in advance.

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>At one time I had a list of the BGL Prefixes but cannot seem>to locate it now in my "stack of stuff".>>I am referring to those seen in the Scenery / Namw / scenery>subfolder and other such subfolders.>>Would someone fill in the blanks for me please.>>AB - contains ? - Airport background>AP - contains Airport data>FL - contains Flatten data>HL - contains ? - Coastlines>HP - contains ? - land/water masks>PK - contains ? - parks>RD - contains roads>RR - contains railroads>ST - contains ? (possibly streams and rivers?)>UT - contains ? - utilities>>Please correct any of the above as necessary.>>Thanks in advance.>>

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Thanks so much Joe -A copy of this will now go back into my "stack of stuff" for futute reference.

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Always glad to help David.Not often that the student gets to become the teacher.BTW, if any one is interested I got that info from a pdf in the Avsim library authored by Winfried Orthmann, file name - fs2004_bgl_structures_version2.zip .An interesting, if dated, read.

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One thing re streams vs rivers:"Rivers" as used by MS (AFAIK) refer to water polygons, found in HP9 files. They have all the characteristics of water, such as obeying waterclass, and can take float planes. They can also have associated river banks in the accompanying HL9 file."Streams" are simple line feature textures, found in ST9 files, and are "burned into" the terrain bitmap but otherwise have none of the characteristics of water.scott s..

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