Adding a statemant on legacy support.
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					A STATEMENT ON LEGACY SUPPORT
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					In the terminal world there is much cruft that comes from old and unsup‐
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					ported terminals that inherit incompatible modes  and  escape  sequences
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					which noone is able to know, except when he/she comes from that time and
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					developed a graphical vt100 emulator at that time.
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					One  goal  of  st is to only support what is really needed. When you en‐
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					counter a sequence which you really need, implement it.  But  while  you
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					are  add it, do not add the other cruft you might encounter while sneek‐
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					ing at other terminal emulators. History has bloated them and  there  is
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					no real evidence that most of the sequences are used today.
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					Christoph Lohmann <20h@r-36.net>
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					2012-09-13T07:00:36.081271045+02:00
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