 Float
0 0 1 0 0 | 1 1 1 — Extended — List
0 0 1 1 0 | 1 1 1 — Extended — Floating point register
0 1 0 0 0 | 1 1 1 — Extended — Allocation list
0 1 0 1 0 | 1 1 1 — Extended — Literal
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<p>It uses first 3 bits of a first byte as a tag to specify the type of the
following value. If the bits were all 1 (special value 7), then few more
bits are used.</p>
<p>For values under 16 the value is placed entirely into bits 4-5-6-7 having
bit 3 set to 0:</p>
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