$opt default_positionals
#- b
make shaders
cargo build --features metal
#/
#- r
METAL_DEVICE_WRAPPER_TYPE=1 ! Enable metal API validation
cargo run --features metal --example $1
#/
#test
cargo test --features empty
#/
#doc b!
cargo doc --features empty
#/
#doc
cargo doc --features empty --open
#/