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# jfiles: component file definitions

main functions:

      jappend
      jcreate
      jdup
      jerase
      jread
      jreplace
      jsize

other functions:

      jopen
      jclose
      jseqno

header structure:

      [0]   v  version
      [1]   s  starting component
      [2]   c  number of components
      [3]   l  file length
      [4]   d  directory pointer
      [5]   f  freelist pointer
      [6]   q  sequence number

error results:

      _1   file not found
      _2   invalid component
      _3   invalid data
      _4   host access error

Name | Type | Description
jappend | verb | append to jfile, (<i.2 3) jappend 'dat'
jcreate | verb | create jfile, jcreate 'dat'
jdup | verb | duplicate jfile, 'new' jdup 'dat'
jerase | verb | erase jfile, jerase 'dat'
jread | verb | read jfile, jread 'dat';2
jreplace | verb | replace in jfile, ('new value';123) jreplace 'dat';2 5
jsize | verb | return size of jfile, jsize 'dat'

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