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<source lang=apl inline>⌺</source> looks like a <source lang=apl inline>⋄</source>-shaped [[Stencil]] laid on a piece of paper, <source lang=apl inline>⎕</source>. | <source lang=apl inline>⌺</source> looks like a <source lang=apl inline>⋄</source>-shaped [[Stencil]] laid on a piece of paper, <source lang=apl inline>⎕</source>. | ||
<source lang=apl inline>⌶</source> calls system services. APL was originally developed at [[IBM]], so system services were also IBM services. <source lang=apl inline>⌶</source> is an [[wikipedia:I-beam|I-beam]] and ''I-beam'' is pronounced almost identically to ''IBM''. | |||
<source lang=apl inline>⍋</source> and <source lang=apl inline>⍒</source> give the indices ([[grade]]s) needed to sort ascending and descending respectively, and look like an ascending and descending supersonic transport, respectively. | <source lang=apl inline>⍋</source> and <source lang=apl inline>⍒</source> give the indices ([[grade]]s) needed to sort ascending and descending respectively, and look like an ascending and descending supersonic transport, respectively. | ||