yabasic.xml

Linux下VB解释器

    <sect1 renderas="sect2" id="top_io">
      <title>File operations and printing</title>
      <variablelist>

	<varlistentry>
	  <term><link linkend="ref_at">at()</link></term>
	  <listitem>
	    can be used in the <function>print</function>-command to place the output at a specified position
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_beep">beep</link></term>
	  <listitem>
	    ring the bell within your computer; a synonym for <function>bell</function>
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_bell">bell</link></term>
	  <listitem>
	    ring the bell within your computer (just as <function>beep</function>)
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_clear_screen">clear screen</link></term>
	  <listitem>
	    erases the text window
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_close">close</link></term>
	  <listitem>
	    close a file, which has been opened before
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_close_printer">close printer</link></term>
	  <listitem>
	    stops printing of graphics
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_print_color">print color</link></term>
	  <listitem>
	    print with color
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_print_colour">print colour</link></term>
	  <listitem>
	    see <function><link linkend="ref_print_color">print color</link></function>
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_eof">eof</link></term>
	  <listitem>
	    check, if an open file contains data
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_getscreen">getscreen$()</link></term>
	  <listitem>
	    returns a string representing a rectangular section of the text terminal
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_inkey">inkey$</link></term>
	  <listitem>
	    wait, until a key is pressed
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_input">input</link></term>
	  <listitem>
	    read input from the user (or from a file) and assign it to a variable
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_line_input">line input</link></term>
	  <listitem>
	    read in a whole line of text and assign it to a variable
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_open">open</link></term>
	  <listitem>
	    open a file
	  </listitem>
	</varlistentry>


	<varlistentry>
	  <term><link linkend="ref_open_printer">open printer</link></term>
	  <listitem>
	    open printer for printing graphics
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_print">print</link></term>
	  <listitem>
	    Write to terminal or file
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_putscreen">putscreen</link></term>
	  <listitem>
	    draw a rectangle of characters into the text terminal
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_reverse">reverse</link></term>
	  <listitem>
	    print reverse (background and foreground colors exchanged)
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_screen">screen</link></term>
	  <listitem>
	    as <function>clear screen</function> clears the text window
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_seek">seek()</link></term>
	  <listitem>
	    change the position within an open file
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_tell">tell</link></term>
	  <listitem>
	    get the current position within an open file
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_using">using</link></term>
	  <listitem>
	    Specify the format for printing a number
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_hash">#</link></term>
	  <listitem>
	    either a comment or a marker for a file-number
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_at">@</link></term>
	  <listitem>
	    synonymous to <function><link linkend="ref_at">at</link></function>
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_semicolon">;</link></term>
	  <listitem>
	    suppress the implicit newline after a <function><link linkend="ref_print">print</link></function>-statement
	  </listitem>
	</varlistentry>

      </variablelist>
    </sect1>

    <sect1 renderas="sect2" id="top_sub">
      <title>Subroutines and libraries</title>
      <variablelist>

	<varlistentry>
	  <term><link linkend="ref_end_sub">end sub</link></term>
	  <listitem>
	    ends a subroutine definition
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_export">export</link></term>
	  <listitem>
	    mark a function as globally visible
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_import">import</link></term>
	  <listitem>
	    import a library
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_local">local</link></term>
	  <listitem>
	    mark a variable as local to a subroutine
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_numparams">numparams</link></term>
	  <listitem>
	    return the number of parameters, that have been passed to a subroutine
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_return">return</link></term>
	  <listitem>
	    return from a subroutine or a gosub
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_static">static</link></term>
	  <listitem>
	    preserves the value of a variable between calls to a subroutine
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_step">step</link></term>
	  <listitem>
	    specifies the increment step in a for-loop
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_sub">sub</link></term>
	  <listitem>
	    declare a user defined subroutine
	  </listitem>
	</varlistentry>

      </variablelist>
    </sect1>

    <sect1 renderas="sect2" id="top_other">
      <title>Other commands</title>
      <variablelist>

	<varlistentry>
	  <term><link linkend="ref_bind">bind()</link></term>
	  <listitem>
	    Binds a <application>yabasic</application>-program and the <application>yabasic</application>-interpreter together into a <emphasis>standalone</emphasis> program.
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_compile">compile</link></term>
	  <listitem>
	    compile a string with <acronym>yabasic</acronym>-code <emphasis>on the fly</emphasis>
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_date">date$</link></term>
	  <listitem>
	    returns a string with various components of the current date
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_doc">doc</link></term>
	  <listitem>
	    special comment, which might be retrieved by the program itself
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_docu">docu$</link></term>
	  <listitem>
	    special array, containing the contents of all docu-statement within the program
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_error">error</link></term>
	  <listitem>
	    raise an error and terminate your program
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_execute">execute$()</link></term>
	  <listitem>
	    execute a user defined subroutine, which must return a string
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_execute">execute()</link></term>
	  <listitem>
	    execute a user defined subroutine, which must return a number
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_exit">exit</link></term>
	  <listitem>
	    terminate your program
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_pause">pause</link></term>
	  <listitem>
	    pause, sleep, wait for the specified number of seconds
	  </listitem>
	</varlistentry>

	<varlistentry>
	  <term><link linkend="ref_peek">peek</link></term>
	  <listitem>
	    retrieve various internal informations
	  </listitem>
	</varlistentry>


	<varlistentry>
	  <term><link linkend="ref_peek2">peek$</link></term>
	  <listitem>
	    retrieve various internal string-informations
	  </listitem>