Command names (e.g., "init", "build")
Command aliases (e.g., "a", "ls") - shown dimmer than command names
The "default: " label text
Default value annotations (e.g., "false", ""hello"")
Description text for options/commands
Epilog text (homepage, repository)
Example code/commands
Flag names (e.g., "--verbose", "-v")
Positional argument names (e.g., "
CLI name shown in header (e.g., "myapp")
Section headers (e.g., "USAGE", "OPTIONS")
Type annotations (e.g., "[string]", "[number]")
URL text (for linkified URLs)
Usage line text
Color codes for each semantic element in help output. Empty string means no color (passthrough).