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  2. List of IRC commands - Wikipedia

    en.wikipedia.org/wiki/List_of_IRC_commands

    This is a list of all Internet Relay Chat commands from RFC 1459, RFC 2812, and extensions added to major IRC daemons. Most IRC clients require commands to be preceded by a slash (" / "). Some commands are actually sent to IRC bots ; these are treated by the IRC protocol as ordinary messages, not as / -commands.

  3. List of GNU Core Utilities commands - Wikipedia

    en.wikipedia.org/wiki/List_of_GNU_Core_Utilities...

    This is a list of commands from the GNU Core Utilities for Unix environments. These commands can be found on Unix operating systems and most Unix-like operating systems. GNU Core Utilities include basic file, shell and text manipulation utilities. Coreutils includes all of the basic command-line tools that are expected in a POSIX system.

  4. Hyperfocal distance - Wikipedia

    en.wikipedia.org/wiki/Hyperfocal_distance

    The hyperfocal distance is entirely dependent upon what level of sharpness is considered to be acceptable. The criterion for the desired acceptable sharpness is specified through the circle of confusion (CoC) diameter limit. This criterion is the largest acceptable spot size diameter that an infinitesimal point is allowed to spread out to on ...

  5. Floppy-disk controller - Wikipedia

    en.wikipedia.org/wiki/Floppy-disk_controller

    While issuing a command to the FDC IC, command and command parameter bytes are issued to the FDC IC through this port. The FDC IC stores the different parameters and the command in its internal registers. After a command is executed, the FDC IC stores a set of status parameters in the internal registers. These are read by the CPU through this port.

  6. Acutance - Wikipedia

    en.wikipedia.org/wiki/Acutance

    Acutance in the left line was artificially increased by adding a one-pixel-wide darker border on the outside of the line and a one-pixel-wide brighter border on the inside of the line. The actual sharpness of the image is unchanged, but the apparent sharpness is increased because of the greater acutance. Artificially increased acutance has ...

  7. ZX Spectrum character set - Wikipedia

    en.wikipedia.org/wiki/ZX_Spectrum_character_set

    The 2×2 block graphics characters are in the Block Elements block at U+2580–U+259F although font support for the latter is not universal. The shape of the UDG characters is mapped to a RAM memory area and is initialized to copies of characters A-U, but can be redefined arbitrarily for example using the BASIC command POKE. Like all characters ...

  8. APL syntax and symbols - Wikipedia

    en.wikipedia.org/wiki/APL_syntax_and_symbols

    There are also system functions available to users for saving the current workspace e.g., )SAVE and terminating the APL environment, e.g., )OFF - sometimes called hook commands or functions due to the use of a leading right parenthesis or hook. [16] There is some standardization of these quad and hook functions.

  9. GL Mk. I radar - Wikipedia

    en.wikipedia.org/wiki/GL_Mk._I_radar

    The sharpness of the echo is a function of the pulse width, so by reducing it the system became more accurate. The Mk. II could offer bearing measurements as accurate as ½ degree, about twice as accurate as the Mk. I*, and just within the range needed to directly aim the guns. The Mk. II had largely replaced the Mk.