# $$\text{FileWriteByte}$$¶

You can use the $$\text{FileWriteByte}$$ function to write a single byte to a file.

You can use the \filewritebyte backslash command to insert this function.

The following variants of this function are available:

• $$\text{boolean } \text{FileWriteByte} \left ( \text{<file number>}, \text{<byte value>} \right )$$

The $$\text{<file number>}$$ parameter is an integer value returned by the $$\text{FileOpenWrite}$$ or $$\text{FileOpenWriteTruncate}$$ functions. The $$\text{<byte value>}$$ parameter holds the byte value to be written.

Note that the byte value must be an integer value over the range $$[ 0, 255 ]$$.

The $$\text{FileWriteByte}$$ function returns true on success or false on failure.

The Figure 135 shows how you can use the $$\text{FileWriteByte}$$ function.