Response:
    
    code[msg]:[colon-separated features]
    

Features:

    hVALUE=VALUE       Set header
    bVALUE             Set body
    db                 Disconnect before sending data
    dr                 Disconnect randomly
    pbNUM|forever      Pause before sending data for NUM seconds or forever
    paNUM|forever      Pause after sending all data for NUM seconds or forever
    prNUM|forever      Pause randomly for NUM seconds or forever
    cVALUE             Set Content-Type header
    lVALUE             Set Location header


Value Specifiers:

    !500k           - 500k of random data
    !500k-utf8      - 500k of utf8. Other specifiers: utf8,alphanum,alpha,printable
    "foo"           - literal
    <path           - load from path under data directory
    <"path"         - load from path under data directory


Examples:
    200:b500k
    404:pb5:b1k-printable
    200:t"text/json":pr5,b1k
    200:b1k:xr


Sequences:

    200 * 2 | !forever
    200 | 404 | 200,b:500g


Anchors:

    Passed on command-line?
        --anchor /foo/bar 200:!/foo


Built-in help

    /help
    /explain/expression