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- ccccoooollll((((1111)))) ccccoooollll((((1111))))
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- NNNNAAAAMMMMEEEE
- _cccc_oooo_llll - filter reverse line-feeds
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- SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
- _cccc_oooo_llll [_----_bbbb] [_----_ffff] [_----_xxxx] [_----_pppp]
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- DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- _cccc_oooo_llll reads from the standard input and writes onto the standard output.
- It performs the line overlays implied by reverse line feeds (ASCII code
- ESC-_7777), and by forward and reverse half-line-feeds (ESC-_9999 and ESC-_8888).
- _cccc_oooo_llll is particularly useful for filtering multicolumn output made with the
- _...._rrrr_tttt command of _nnnn_rrrr_oooo_ffff_ffff and output resulting from use of the _tttt_bbbb_llll(1)
- preprocessor.
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- If the _----_bbbb option is given, _cccc_oooo_llll assumes that the output device in use is
- not capable of backspacing. In this case, if two or more characters are
- to appear in the same place, only the last one read will be output.
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- Although _cccc_oooo_llll accepts half-line motions in its input, it normally does not
- emit them on output. Instead, text that would appear between lines is
- moved to the next lower full-line boundary. This treatment can be
- suppressed by the _----_ffff (fine) option; in this case, the output from _cccc_oooo_llll may
- contain forward half-line-feeds (ESC-9), but will still never contain
- either kind of reverse line motion.
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- Unless the _----_xxxx option is given, _cccc_oooo_llll will convert white space to tabs on
- output wherever possible to shorten printing time.
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- The ASCII control characters SO (\017) and SI (\016) are assumed by _cccc_oooo_llll
- to start and end text in an alternate character set. The character set
- to which each input character belongs is remembered, and on output SI and
- SO characters are generated as appropriate to ensure that each character
- is printed in the correct character set.
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- On input, the only control characters accepted are space, backspace, tab,
- return, new-line, SI, SO, VT (\013), and ESC followed by _7777, _8888, or _9999. The
- VT character is an alternate form of full reverse line-feed, included for
- compatibility with some earlier programs of this type. All other non-
- printing characters are ignored.
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- Normally, _cccc_oooo_llll will ignore any escape sequences unknown to it that are
- found in its input; the _----_pppp option may be used to cause _cccc_oooo_llll to output
- these sequences as regular characters, subject to overprinting from
- reverse line motions. The use of this option is highly discouraged
- unless the user is fully aware of the textual position of the escape
- sequences.
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- FFFFIIIILLLLEEEESSSS
- _////_uuuu_ssss_rrrr_////_llll_iiii_bbbb_////_llll_oooo_cccc_aaaa_llll_eeee_////_l_o_c_a_l_e_////_LLLL_CCCC______MMMM_EEEE_SSSS_SSSS_AAAA_GGGG_EEEE_SSSS_////_uuuu_xxxx_cccc_oooo_rrrr_eeee
- language-specific message file [See _LLLL_AAAA_NNNN_GGGG on _eeee_nnnn_vvvv_iiii_rrrr_oooo_nnnn(5).]
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- PPPPaaaaggggeeee 1111
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- ccccoooollll((((1111)))) ccccoooollll((((1111))))
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- SSSSEEEEEEEE AAAALLLLSSSSOOOO
- _aaaa_ssss_cccc_iiii_iiii(5)
- _nnnn_rrrr_oooo_ffff_ffff(1), _tttt_bbbb_llll(1) in the _D_O_C_U_M_E_N_T_E_R'_S _W_O_R_K_B_E_N_C_H _S_o_f_t_w_a_r_e _T_e_c_h_n_i_c_a_l
- _D_i_s_c_u_s_s_i_o_n _a_n_d _R_e_f_e_r_e_n_c_e _M_a_n_u_a_l
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- NNNNOOOOTTTTEEEESSSS
- The input format accepted by _cccc_oooo_llll matches the output produced by _nnnn_rrrr_oooo_ffff_ffff
- with either the _----_TTTT_3333_7777 or _----_TTTT_llll_pppp options. Use _----_TTTT_3333_7777 (and the _----_ffff option of
- _cccc_oooo_llll) if the ultimate disposition of the output of _cccc_oooo_llll will be a device
- that can interpret half-line motions, and _----_TTTT_llll_pppp otherwise.
-
- _cccc_oooo_llll cannot back up more than 256 lines or handle more than 4096
- characters per line.
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- Local vertical motions that would result in backing up over the first
- line of the document are ignored. As a result, the first line must not
- have any superscripts.
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- PPPPaaaaggggeeee 2222
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