| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | iswalpha | 3 | 110 |
| opensolaris | iswalpha | 3c | 77 |
| redhat | iswalpha | 3 | 75 |
| freebsd | iswalpha | 3 | 71 |
| sunos | iswalpha | 3c | 71 |
| v7 | iswalpha | 3 | 67 |
| mojave | iswalpha | 3 | 63 |
| centos | iswalpha | 3 | 61 |
| xfree86 | iswalpha | 3 | 61 |
| freebsd | iswalpha_l | 3 | 56 |
| opendarwin | iswalpha | 3 | 55 |
| php | iswalpha | 3 | 54 |
| x11r4 | iswalpha | 3 | 51 |
| debian | iswalpha | 3 | 51 |
| posix | iswalpha | 3p | 50 |
| suse | iswalpha | 3 | 44 |
| minix | iswalpha | 3 | 43 |
| osx | iswalpha | 3 | 42 |
| osx | iswalpha_l | 3 | 41 |
| plan9 | iswalpha | 3 | 39 |
| suse | iswalpha | 3p | 39 |
| netbsd | iswalpha | 3 | 36 |
| bsd | iswalpha | 3 | 36 |
| mojave | iswalpha_l | 3 | 34 |
| osf1 | iswalpha | 3 | 30 |
| centos | iswalpha | 3p | 22 |
| hpux | iswalpha | 3c | 19 |