pub const G_RPAREN: &[&str] = &["("];
pub const G_LPAREN: &[&str] = &[")"];

pub const G_RBRACKET: &[&str] = &["["];
pub const G_LBRACKET: &[&str] = &["]"];

pub const G_RBRACE: &[&str] = &["{"];
pub const G_LBRACE: &[&str] = &["}"];

pub const G_RBRACE_HIDDEN: &[&str] = &["{:"];
pub const G_LBRACE_HIDDEN: &[&str] = &[":}"];

pub const G_LANGLE: &[&str] = &["(:", "<<", "langle"];
pub const G_RANGLE: &[&str] = &[":)", ">>", "rangle"];
pub const G_LXPAR: &[&str] = &["{: x )"];
pub const G_RXPAR: &[&str] = &["( x :}"];
pub const G_ABS: &[&str] = &["abs"];
pub const G_FLOOR: &[&str] = &["floor"];
pub const G_CEIL: &[&str] = &["ceil"];
pub const G_NORM: &[&str] = &["norm"];

pub const G_MATRIX_SEP: &[&str] = &[","];

pub const T_LPAREN: char = ')';