for testing purposes.  You must make sure the correct
	encoding is used, Vim doesn't check it.
	How the related spell files are found is explained here: |spell-load|.

	If the |spellfile.vim| plugin is active and you use a language name
	for which Vim cannot find the .spl file in 'runtimepath' the plugin
	will ask you if you want to download the file.

	After this option has been set successfully, Vim will source the files
	"spell/LANG.vim" in 'runtimepath'.  "LANG" is the value of 'spelllang'
	up to the first character that is not an ASCII letter or number and
	not a dash.  Also see |set-spc-auto|.

						*'spelloptions'* *'spo'*
'spelloptions' 'spo'	string	(default "")
			local to buffer
	A comma-separated list of options for spell checking:
	camel		When a word is CamelCased, assume "Cased" is a
			separate word: every upper-case character in a word
			that comes after a lower case character indicates the
			start of a new word.
	noplainbuffer	Only spellcheck a buffer when 'syntax' is enabled,
			or when extmarks are set within the buffer. Only
			designated regions of the buffer are spellchecked in
			this case.

						*'spellsuggest'* *'sps'*
'spellsuggest' 'sps'	string	(default "best")
			global
	Methods used for spelling suggestions.  Both for the |z=| command and
	the |spellsuggest()| function.  This is a comma-separated list of
	items:

	best		Internal method that works best for English.  Finds
			changes like "fast" and uses a bit of sound-a-like
			scoring to improve the ordering.

	double		Internal method that uses two methods and mixes the
			results.  The first method is "fast", the other method
			computes how much the suggestion sounds like the bad
			word.  That only works when the language specifies
			sound folding.  Can be slow and doesn't always give
			better results.

	fast		Internal method that only checks for simple changes:
			character inserts/deletes/swaps.  Works well for
			simple typing mistakes.

	{number}	The maximum number of suggestions listed for |z=|.
			Not used for |spellsuggest()|.  The number of
			suggestions is never more than the value of 'lines'
			minus two.

	timeout:{millisec}   Limit the time searching for suggestions to
			{millisec} milliseconds.  Applies to the following
			methods.  When omitted the limit is 5000. When
			negative there is no limit.

	file:{filename} Read file {filename}, which must have two columns,
			separated by a slash.  The first column contains the
			bad word, the second column the suggested good word.
			Example:
				theribal/terrible ~
			Use this for common mistakes that do not appear at the
			top of the suggestion list with the internal methods.
			Lines without a slash are ignored, use this for
			comments.
			The word in the second column must be correct,
			otherwise it will not be used.  Add the word to an
			".add" file if it is currently flagged as a spelling
			mistake.
			The file is used for all languages.

	expr:{expr}	Evaluate expression {expr}.  Use a function to avoid
			trouble with spaces.  Best is to call a function
			without arguments, see |expr-option-function|.
			|v:val| holds the badly spelled word.  The expression
			must evaluate to a List of Lists, each with a
			suggestion and a score.
			Example:
				[['the', 33], ['that', 44]] ~
			Set 'verbose' and use |z=| to see the scores that the
			internal methods use.  A lower score is better.
			This may invoke |spellsuggest()| if you temporarily
			set 'spellsuggest' to exclude the "expr:" part.
			Errors are silently ignored, unless you set the
			'verbose' option to a non-zero value.

	Only one of "best", "double" or "fast" may be used.  The others may
	appear several times in any order.  Example: >vim
		set sps=file:~/.config/nvim/sugg,best,expr:MySuggest()
<
	This option cannot be set from a |modeline| or in the |sandbox|, for
	security reasons.

			*'splitbelow'* *'sb'* *'nosplitbelow'* *'nosb'*
'splitbelow' 'sb'	boolean	(default off)
			global
	When on, splitting a window