functional_block_diagram.xml

<svg>
  <config background="white"/>
  <rect id="ace" xy="0" wh="25 15" text="ATTITUDE\nCONTROL\nELECTRONICS\n(ACE)" />
  <rect id="prgp" xy="#ace|v 18" wh="25 12" text="PRIMARY\nRATE GYRO\nPACKAGE" />
  <rect id="srgp" xy="#prgp|v 7" wh="25 12" text="SECONDARY\nRATE GYRO\nPACKAGE" />

  <rect id="oame" xy="#ace@r" xy-loc="c" dx="62" wh="27 15" text="ORBIT ATTITUDE\nAND MANEUVER\nELECTRONICS\n(OAME)" />
  <rect id="pi" xy="#prgp@r" xy-loc="c" dx="62" wh="22 12" text="POWER\nINVERTER" />

  <rect id="ms" xy="#ace@tl" xy-loc="br" dxy="-16 -9" wh="18 7" text="MODE\nSELECTION" text-loc="l" class="d-none"/>
  <rect id="as" xy="#ace@tl" xy-loc="tr" dx="-16" wh="16 7" text="ATTITUDE\nSIGNALS" text-loc="l" class="d-none"/>
  <rect id="rrcs" xy="#oame@tr" xy-loc="bl" dxy="10 -5" wh="18 15" text="REENTRY\nREACTION\nCONTROL\nSYSTEM" text-loc="l" class="d-none"/>
  <rect id="oaamrcs" xy="#oame|h 10" wh="35 15" text="ORBIT ATTITUDE\nAND MANEUVER\nREACTION CONTROL\nSYSTEM" text-loc="l" class="d-none"/>

  <circle id="ppi" r="0.75" cxy="#prgp@r" dx="10" class="d-fill-black"/>
  <circle id="jfc" r="0.75" cxy="#ace@r" dx="24" class="d-fill-black"/>

  <polyline start="#prgp@l" end="#ace@l:75%" corner-offset="8" text="p,q,r" text-loc="br" class="d-arrow"/>
  <polyline start="#srgp@l" end="#ace@l:50%" corner-offset="14" text="p,q,r" text-loc="br" class="d-arrow"/>
  <line start="#as" end="#ace" class="d-arrow"/>

  <polyline start="#ppi@t" end="#ace@b" corner-offset="70%" class="d-arrow"/>
  <polyline start="#ppi" end="#srgp@r" class="d-arrow"/>
  <polyline start="#jfc@t" end="#rrcs@l" class="d-arrow"/>
  <line start="#oame" end="#oaamrcs" class="d-arrow"/>

  <polyline start="#ace@r" end="#oame@l" text="JET FIRING\nCOMMANDS" text-dxy="-10 0.2" text-lsp="1.3" class="d-arrow"/>
  <polyline start="#pi@l" end="#prgp@r" text="26V, 400~" text-dy="-2" class="d-arrow"/>

  <polyline start="#ms@r" end="#ace@t" class="d-arrow"/>
</svg>