␁

ASCII Character ␁

Start of Heading

The Start of Heading character (␁) is a control character in the ASCII and Unicode character sets with the value of 1. It's also often abbreviated as SOH. The Start of Heading character was originally designed for use in telecommunications (like teleprinters and teletypewriters) to indicate the beginning of a sequence of characters that formed a machine-readable address or routing information. This would help in directing the following message or data to the correct place.

Here are some key details:

In ASCII and Unicode, the SOH character is defined as U+0001.
Like other ASCII control characters, SOH does not represent a printable glyph and is typically non-visible in text content.
In practice today, its original function is mostly obsolete, and the SOH character is seldom used in its original context.

However, in some specialized areas or legacy systems, the SOH and other control characters might still be in use. For most general computer and internet applications, its usage has been replaced by more modern protocols and formats.

ASCII Code for `␁`

These are the code points for start of Heading in various character sets

Character Sets	Decimal	Hex
ASCII	1	01

Unicode for `␁`

The character for start of Heading is mapped in Unicode as U+0001

UTF-8 (binary)
Unicode	U+0001
Unicode Decimal	1
Unicode Escape	\u0001
UTF-8 (hex)	0xE2 0x90 0x81
UTF-8 (binary)	111000101001000010000001
111000101001000010000001
UTF-16	0x0001
UTF-32	0x00000001

HTML Entities for `␁`

The following HTML entities can be used to represent the start of Heading in HTML

HTML Number
HTML Hex

Source Code

C, C++, and Java	"\u0001"
CSS Code	\0001
JavaScript	"\u0001"
Perl	\x{0001}
Python 2	u"\u0001"
Python 3	\u0001
Ruby	\u{0001}

Back to ASCII Characters

Other Resources

ASCII Character ␁

ASCII Code for ␁

Unicode for ␁

HTML Entities for ␁

Source Code

ASCII Code for `␁`

Unicode for `␁`

HTML Entities for `␁`