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An example of hidden comments This won't be visible except in "edit" mode. --> Another way to include a comment in the wiki markup uses the {} template, which can be abbreviated as {}. This template "expands" to the empty string, generating no HTML output; it is visible only to people editing the wiki source.
Most languages support multi-line block (a.k.a. stream) and/or single line comments. A block comment is delimited with text that marks the start and end of comment text. It can span multiple lines or occupy any part of a line. Some languages allow block comments to be recursively nested inside one another, but others do not.
In the following example, text is passed to the tr command (transliterating lower to upper-case) using a here document. This could be in a shell file, or entered interactively at a prompt. This could be in a shell file, or entered interactively at a prompt.
Not HTML, no spaces, just a newline, nothing more. This allows a multiline #tag to be placed on a single line, even with indentation, which is otherwise impossible.
Javadoc ignores comments unless they are specially marked. A Javadoc comment is marked with an extra asterisk after the start of a multi-line comment: /**. A comment block pertains to the symbol that follows the block. An example of a class header block follows:
Command names are terminated by a space, a number or any other "non-letter" character. They consist of a backslash \ and exactly one non-letter. Some commands need an argument, which has to be given between curly braces {} after the command name. Some commands support optional parameters, which are added after the command name in square ...
The resulting layout and HTML are identical to that generated by the single-line syntax. Either wikitext markup is functionality-limited and easily broken. A major weakness of both variants of wikitext markup is that they are easily broken by later editors attempting to create multi-line values.
For years in HTML, a table has always forced an implicit line-wrap (or line-break). So, to keep a table within a line, the workaround is to put the whole line into a table, then embed a table within a table, using the outer table to force the whole line to stay together. Consider the following examples: Wikicode (showing table forces line-break)