(PECL haru >= 0.0.1) Get the width of the page

(PECL haru >= 0.0.1) Get the number of bits used to describe each color component of the image

(PECL haru >= 0.0.1) Set filling color for the page

(PECL haru >= 0.0.1) Get the vertical ascent of the font

(PECL haru >= 0.0.1) Save the document into the specified file

(PECL haru >= 0.0.1) Set stroking color for the page

(PECL haru >= 0.0.1) Get the current line width

(PECL haru >= 0.0.1) Get the value of miter limit

(PECL haru >= 0.0.1) Fill current path using even-odd rule, then paint the path

(PECL haru >= 0.0.1) Set transition style for the page