ID 1A - Extended pulse sequence
length: [00,01,02,03]+04
Offset	Value	Type	Description
0x00	4*N	DWORD	Block length (without these four bytes)
0x04	-	SEQ[N]	Duration and repeat count of pulses in each sequence

SEQ structure format
Offset	Value	Type	Description
0x00	-	WORD	Pulse duration
0x02	-	WORD	Number of repetitions

This will produce N sequences of pulses, each sequence consisting of specified amount of pulses of specified duration.

Note that zero pulse duration is perfectly valid as well. It may be used to invert current pulse level at either the beginning or end of the block or to achieve pulse of duration greater than 65535 T cycles if necessary. In either of these cases the number of repetitions specified should be 1.

ID 1B - Simple Generalized Data Block
length: [00,01,02,03]+04
Offset	Value	Type	Description
0x00	-	DWORD	Block length (without these four bytes)
0x04	-	WORD	Pause after this block (ms)
0x06	B	DWORD	Number of bits in the data stream.
0x0A	P0	WORD	Number of pulses used to encode bit 0.
0x0C	P1	WORD	Number of pulses used to encode bit 1.
0x0E	S0	WORD[P0]	Array of pulse durations representing bit 0.
0x0E+2*P0	S1	WORD[P1]	Array of pulse durations representing bit 1.
0x0E+2*(P0+P1)	-	BYTE[ceil(B/8)]	Data stream

This block is used to store data whose bits 0 and 1 are each encoded with specified pulse sequences. The bytes in the data stream are processed one bit at time, most significant bits first, and each bit is represented as one of the two available sequences of pulses according to given bit value, S0 sequence for bit 0 and S1 sequence for bit 1, respectively.

Note that zero pulse duration in pulse sequence is perfectly valid as well. It may be used to invert current pulse level at either the beginning or end of the sequence as necessary.