| Authentication with keys registered in key agent (even if keys not specified at IdentiyFile) | 1.5.4 or later |
| Connect to servers using NFS mount as home with root_squash option | 1.5.4 or later |
| Authentication with ECDSA/Ed25519 keys | 1.5 |
| Authentication with keys registered in key agent (if keys specified at IdentiyFile) | 1.5 |
| hln target relative path | 1.4.3 or later, 1.3.4 or later |
| hcp -H option | 1.4.3 or later, 1.3.4 or later |
| hrm single path use, other commands rather than hcp/hsync | 1.3 or later, 1.2.4 or later |
| hcp | 1.3 or later |
| hsync | 1.4, 1.3.1 or later |
| hcp --mcd=1 set and no options to read from devices like --reading-dev set | 1.2.4 or later |
| hsync --mcd=1 set and no options to read from devices like --reading-dev set | 1.2.7 or later |