Problems

Dhole never stops at a problem. A line it cannot read is left out, or read as far as it makes sense, and everything else is drawn; and each problem is said as one line - where it is, what is wrong, and what to write instead:

Line 3, column 33: (warning) 'rond' is not something a step can be. Write 'round' if that is what you mean.

The line and the column are counted from 1, the column at the first character of what is wrong.

Where they are said

• Draw Dhole's Problems output holds them, one to a line, in the order of the text's lines; it is empty when there are none. The Mistakes example prints them through Print Line.
• Write Dhole's card lists them under the picture as you type, in the language Divooka Compute is set to.
• In code, Dhole.Read gives them as DholeProblems, with the line, the column, the length, the message and the hint, in English or in Chinese; Dhole.Check gives them without drawing.

Errors and warnings

An error is a line Dhole cannot draw as written: it is left out, or drawn as far as it can be read. A warning - its line says (warning) - is a line drawn as Dhole read it that was probably not meant that way. A text whose every line is wrong draws nothing, and Draw Dhole fails with its first problem as its message.

This text has four mistakes:

flowchrt Ten minutes to fix
direction: sideways
Wake up -> Shower -> Breakfast [rond]
-> Leave
Breakfast -> Leave: on time

Dhole draws what it can read - a flowchart of four steps, since flowchrt is a slip for flowchart - and says the rest:

Line 1, column 1: 'flowchrt' is not something Dhole draws, so this is drawn as a flowchart. Write 'flowchart' if a flowchart is what you mean.
Line 2, column 12: 'sideways' is not a direction. Write down, right, up or left.
Line 3, column 33: (warning) 'rond' is not something a step can be. Write 'round' if that is what you mean.
Line 4, column 1: The arrow comes from nothing. Write what the arrow starts at before it.

Slips

A word that is a slip for one Dhole knows - a letter or two away, depending on its length, or two letters swapped - is answered with the word it was probably meant to be: a kind (flowchrt), an attribute (rond, dimond), a setting in a chart's data (titel: Sales). Mermaid's spellings that cannot be mistaken are read rather than said - see Dhole and Mermaid - and the ones that would be drawn wrong are said with the Dhole way to write them: a label between bars (A -->|yes| B), an arrow a kind has not got (-.->, --x).

Every problem

In the table, the words in angle brackets stand for what the text said.

Problem	Kind	Says	And
An empty text	error	There is nothing to draw.	Start with what to draw, such as flowchart, and write what it shows on the lines after.
A first word that names no kind	error	'‹word›' is not something Dhole draws.	Start with one of: flowchart, sequence, …
A misspelt kind	error	'‹word›' is not something Dhole draws, so this is drawn as a ‹kind›.	Write '‹word›' if a ‹kind› is what you mean.
A setting written twice	warning	‹setting› was set before; the later setting is used.	Keep one of the two lines.
A setting with no value	error	‹setting› needs a value after the colon.	Write the value after the colon, or remove the line.
Tabs and spaces together	warning	This line is indented with tabs and spaces together; a tab counts as four spaces.	Indent with spaces only, or with tabs only.
An unknown theme	error	There is no theme called '‹name›'.	The themes are: …
A direction that is none	error	'‹word›' is not a direction.	Write down, right, up or left.
A size that is none	error	'‹text›' is not a size.	Write the width and the height in pixels, such as 800 x 600.
A switch that is neither	error	'‹word›' is neither on nor off.	Write on or off; yes and no mean the same.
A number that is none	error	'‹text›' is not a number.	Write a number with a dot for its decimals, such as 12.5.
A range that is none	error	'‹text›' is not a range.	Write the lowest and the highest value with two dots between them, such as 0..100.
A date that is none	error	'‹text›' is not a date.	Write a date as year-month-day, such as 2026-11-02, with a time after it if you need one: 2026-11-02 14:30.
A length that is none	error	'‹text›' is not a length of time.	Write a number of days, weeks or hours, such as 3d, 2w or 4h.
A choice that is none	error	'‹word›' is not one of the choices for ‹setting›.	Write one of: …
A quotation mark not closed	error	The quotation mark is not closed.	End the quoted name with another quotation mark.
A bracket not closed	error	The [ is not closed.	End the list in brackets with ].
A name missing	error	A name is missing here.	Write a name, or put one in quotation marks.
An unknown attribute	warning	'‹word›' is not something ‹a step› can be.	It can be: …
A misspelt attribute	warning	'‹word›' is not something ‹a step› can be.	Write '‹word›' if that is what you mean.
A misspelt setting	error	'‹word›' is not a setting, and its value is not a number, so this line is left out.	Write '‹setting›' if that is the setting you mean.
An arrow from nothing	error	The arrow comes from nothing.	Write what the arrow starts at before it.
An arrow to nothing	error	The arrow points at nothing.	Write what the arrow goes to after it.
An arrow the kind has not got	error	'‹arrow›' is not an arrow ‹a flowchart› has, so this line is left out.	The arrows are: …
A label between bars	error	A label goes after a colon at the end of the line, not between bars, so this line is left out.	Write it as A --> B: yes.
Indented under nothing	warning	This line is indented under a line that holds nothing, so it is read as if it were not indented.	Remove the indentation, or indent it under a group.
An empty group	warning	'‹group›' holds nothing.	Indent what belongs to it under it.
A member outside a class	error	This member belongs to no class.	Indent it under the class it belongs to.
An attribute outside an entity	error	This attribute belongs to no entity.	Indent it under the entity it belongs to.
A count no end can have	error	'‹text›' is not a cardinality.	Write 1, 0..1, 1..* or * at each end of the line, such as 1-*.
A star outside a state diagram	error	A start or an end belongs to a state machine, not to ‹a flowchart›.	Use * only in a state diagram.
A note with nowhere to go	error	A note needs a place to go.	Write note over A, note left of A or note right of A, then a colon and the note.
A message without an arrow	error	A message goes from one participant to another with an arrow.	Write it as Alice -> Bob: Hello, or Bob --> Alice: Hi for a reply.
An else without an if	error	'else' belongs straight after an 'if' block.	Put it at the same indentation as its 'if', after the lines indented under that.
An and without a par	error	'and' belongs straight after a 'par' block.	Put it at the same indentation as its 'par', after the lines indented under that.
Lines under a message	warning	'‹line›' holds lines indented under it but is not a block.	A block starts with loop, if, else, opt, par, and, critical or break.
Several centres	warning	A mind map grows from one centre; the lines at the top after the first are drawn as its branches.	Indent them under the first, or give the map a title to be its centre.
An event without a time	error	This event has no time.	Write the time, a colon, then the event: 1969: The Moon landing.
A task after an unknown task	error	There is no task called '‹name›' to start after.	Name a task written in the chart, as it is written.
A task with no start	error	'‹task›' has no date to start from.	Give it a date, or write a start: setting such as start: 2026-11-02.
A task waiting for itself	error	'‹task›' waits for itself through the tasks it starts after.	Let one of those tasks start on a date instead.
A task ending before it starts	error	'‹task›' ends before it starts.	Give it an end after its start, or a length.
A task named twice	warning	There is already a task called '‹task›'.	Give each task a name of its own, so 'after' knows which is meant.
No data	error	There is no data to draw.	Write a line for each value: a name, a colon, then the value.
Values and labels that do not match	warning	'‹series›' has ‹n› values for ‹m› labels.	Give it one value for each label.
A slice or a flow not above zero	warning	'‹name›' is not above zero, so it has no slice.	Give every slice an amount above zero.
A point that is none	error	'‹text›' is not a point.	Write a point as two numbers in brackets, such as (3, 4.5).
A point outside the range	warning	'‹point›' lies outside the chart's range, so it is drawn at its edge.	Change its value, or the range: setting.
One value and several mixed	warning	'‹kind›' mixes lines with one value and lines with several.	Write every line with one value, or every line with a value for each label.
A flow without an amount	error	A flow needs an amount.	Write the amount after a colon: Coal -> Power: 25.
Flows in a circle	error	The flows go round in a circle through '‹node›', and a Sankey diagram flows one way.	Remove one of the flows that lead back.
A row of the wrong length	warning	This row has ‹n› cells and the header has ‹m›.	Give every row a cell for each column.
A diagram that could not be drawn	error	This ‹kind› could not be drawn: ‹why›	Simplify the lines it is drawn from; the text up to here is read as written.
Nothing between separators	warning	There is nothing between these separators.	Remove one of the --- lines, or write a diagram between them.

In Chinese

Every problem is worded in Chinese as well, and Write Dhole's card shows them in Chinese when Divooka Compute is:

第 3 行第 7 列：“lots”不是数字。请写数字，小数用点表示，例如 12.5。

Draw Dhole's Problems output is always English, so a document's run prints the same words on every machine.