Roger S. Nelsson said 
"LT" in a fontname is for Linotype. "Lt" might be short for Light. Is it a light font?
"Std" in a font from Linotype/Adobe/Monotype stands for "Standard OpenType font" - as in no extra language support.
"Pro" in a font from Linotype/Adobe/Monotype means it has extra language support (minimum CE, but often Cyrillic and Greek, too).
Both "Std" and "Pro" fonts from Linotype/Adobe/Monotype may contain advanced OpenType features, but they also may not – Std/Pro only tells something about the language support.
But we're miles away from dafont/"free font" territory here...
Yes, that's it! There is "LT" so "Linotype".
Where I can find some additional information about fonts naming?
I found only that PDF document:
http://docs.google.com/viewer?a=v&q=cache:ZXMeO7rrLY8J:www.adobe.com/devnet/font/pdfs/5088.FontNames.pdf+font+naming&hl=pl&gl=pl&pid=bl&srcid=ADGEESiUGwL7PlBFJ87XxcCu5ibXPuC4gG7Ag7V39urQ6TUX0tupp_nXsv5bJBtBXgHHz6U1CHvBxj1f9j7VVynxlNtVDeruqoPgJknjnDxfSOlBRQYl7kHfTy20yg2WqMF55Th8NxOV&sig=AHIEtbSbEWgNHOvxORj3mQv3Orwq-0IVag metaphasebrothel said 
it would mean sexually transmitted disease.
Better will be Light Standard
Thank you very much.
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