| OS | Man Page | Section | Hits |
|---|---|---|---|
| posix | isalpha | 3p | 830 |
| linux | isalpha | 3 | 820 |
| linux | iswalpha | 3 | 789 |
| bsd | isalpha | 3 | 761 |
| netbsd | isalpha | 3 | 724 |
| freebsd | isalpha | 3 | 703 |
| xfree86 | glalphafunc | 3g | 676 |
| redhat | iswalpha | 3 | 671 |
| debian | px_put_data_alpha | 3 | 663 |
| redhat | isalpha | 3 | 659 |
| mojave | isalpha | 3 | 654 |
| suse | isalpha | 3 | 653 |
| opensolaris | iswalpha | 3c | 647 |
| debian | px_get_data_alpha | 3 | 641 |
| osx | isalpha | 3 | 631 |
| debian | iswalpha | 3 | 607 |
| suse | glalphafunc | 3g | 597 |
| php | ctype_alpha | 3 | 597 |
| php | imagealphablending | 3 | 594 |
| redhat | glalphafunc | 3g | 590 |
| sunos | isalpha | 3c | 572 |
| opensolaris | mlib_imagemulalpha | 3mlib | 571 |
| hpux | isalpha | 3c | 556 |
| opendarwin | iswalpha | 3 | 545 |
| debian | prelude.isalpha | 3kaya | 539 |
| centos | iswalpha | 3 | 537 |
| linux | alphasort | 3 | 535 |
| opensolaris | isalpha | 3c | 531 |
| mojave | tcl_unicharisalpha | 3 | 522 |
| opensolaris | mlib_imagedivalpha_inp | 3mlib | 521 |
| posix | iswalpha | 3p | 519 |
| opendarwin | isalpha | 3 | 517 |
| plan9 | iswalpha | 3 | 516 |
| x11r4 | iswalpha | 3 | 514 |
| sunos | mlib_imagemulalpha_inp | 3mlib | 511 |
| opensolaris | mlib_imagedivalpha | 3mlib | 507 |
| minix | iswalpha | 3 | 504 |
| sunos | iswalpha | 3c | 500 |
| v7 | iswalpha | 3 | 500 |
| x11r4 | isalpha | 3 | 498 |
| freebsd | iswalpha | 3 | 497 |
| minix | isalpha | 3 | 492 |
| centos | isalpha | 3 | 492 |
| v7 | set_alpha_blender | 3alleg4 | 490 |
| php | imagecolorclosestalpha | 3 | 490 |
| opensolaris | mlib_imagemulalpha_inp | 3mlib | 490 |
| opensolaris | sdl_setalpha | 3 | 487 |
| xfree86 | iswalpha | 3 | 487 |
| suse | set_alpha_blender | 3alleg4 | 484 |
| bsd | iswalpha | 3 | 482 |