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A wick is a stable or oscillating linearly repeating pattern. The essential characteristic distinguishing it from an agar is that it is one-dimensional. A fuse is a wick that burns from one end.

Conversely, a wickstretcher is a moving entity, usually a spaceship, which lengthens the segment of wick to which it is conjoined. Various combinations are possible: two stretchers moving in opposite directions could prolong a finite wick; one end could possibly be freestanding or require stabilization, a service rendered by a fencepost.

A wick could simply be infinite in extent, possibly quite convoluted in the style of a Hilbert curve. Or without any evident termination except for possibly closing into a loop.

The vex is a period-41 wick which can be stabilised by fenceposts comprised of copies of 204P41. It is historically notable because, though it had previously been stabilised using period-41 glider streams from pseudo-period guns of period 82, any completion of it with true period 41 (before 204P41's completion) would have been the first period-41 oscillator.


x = 37, y = 8, rule = B3/S23 15bo6bo$14b2o5b2o6b2o$6b3obobob2obobob2obobo$2b2obo6bobo4bobo4bobo2bob 2o$o2bobo3bo18b4obo2bo$2obobo27bob2o$3bo29bo$3b2o27b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 GPS 5 AUTOSTART ]]
Turning toads, a toad wick stabilized at both ends by fenceposts
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RLE: here Plaintext: here

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