5 files changed, 231 insertions, 11 deletions

diff --git a/doc/gen/Languages.txt b/doc/gen/Languages.txt
new file mode 100644
index 0000000..9d0df2d
--- /dev/null
+++ b/doc/gen/Languages.txt
@@ -0,0 +1,118 @@
+Format: 1.51
+
+# This is the Natural Docs languages file for this project.  If you change
+# anything here, it will apply to THIS PROJECT ONLY.  If you'd like to change
+# something for all your projects, edit the Languages.txt in Natural Docs'
+# Config directory instead.
+
+
+# You can prevent certain file extensions from being scanned like this:
+# Ignore Extensions: [extension] [extension] ...
+
+
+#-------------------------------------------------------------------------------
+# SYNTAX:
+#
+# Unlike other Natural Docs configuration files, in this file all comments
+# MUST be alone on a line.  Some languages deal with the # character, so you
+# cannot put comments on the same line as content.
+#
+# Also, all lists are separated with spaces, not commas, again because some
+# languages may need to use them.
+#
+# Language: [name]
+# Alter Language: [name]
+#    Defines a new language or alters an existing one.  Its name can use any
+#    characters.  If any of the properties below have an add/replace form, you
+#    must use that when using Alter Language.
+#
+#    The language Shebang Script is special.  It's entry is only used for
+#    extensions, and files with those extensions have their shebang (#!) lines
+#    read to determine the real language of the file.  Extensionless files are
+#    always treated this way.
+#
+#    The language Text File is also special.  It's treated as one big comment
+#    so you can put Natural Docs content in them without special symbols.  Also,
+#    if you don't specify a package separator, ignored prefixes, or enum value
+#    behavior, it will copy those settings from the language that is used most
+#    in the source tree.
+#
+# Extensions: [extension] [extension] ...
+# [Add/Replace] Extensions: [extension] [extension] ...
+#    Defines the file extensions of the language's source files.  You can
+#    redefine extensions found in the main languages file.  You can use * to
+#    mean any undefined extension.
+#
+# Shebang Strings: [string] [string] ...
+# [Add/Replace] Shebang Strings: [string] [string] ...
+#    Defines a list of strings that can appear in the shebang (#!) line to
+#    designate that it's part of the language.  You can redefine strings found
+#    in the main languages file.
+#
+# Ignore Prefixes in Index: [prefix] [prefix] ...
+# [Add/Replace] Ignored Prefixes in Index: [prefix] [prefix] ...
+#
+# Ignore [Topic Type] Prefixes in Index: [prefix] [prefix] ...
+# [Add/Replace] Ignored [Topic Type] Prefixes in Index: [prefix] [prefix] ...
+#    Specifies prefixes that should be ignored when sorting symbols in an
+#    index.  Can be specified in general or for a specific topic type.
+#
+#------------------------------------------------------------------------------
+# For basic language support only:
+#
+# Line Comments: [symbol] [symbol] ...
+#    Defines a space-separated list of symbols that are used for line comments,
+#    if any.
+#
+# Block Comments: [opening sym] [closing sym] [opening sym] [closing sym] ...
+#    Defines a space-separated list of symbol pairs that are used for block
+#    comments, if any.
+#
+# Package Separator: [symbol]
+#    Defines the default package separator symbol.  The default is a dot.
+#
+# [Topic Type] Prototype Enders: [symbol] [symbol] ...
+#    When defined, Natural Docs will attempt to get a prototype from the code
+#    immediately following the topic type.  It stops when it reaches one of
+#    these symbols.  Use \n for line breaks.
+#
+# Line Extender: [symbol]
+#    Defines the symbol that allows a prototype to span multiple lines if
+#    normally a line break would end it.
+#
+# Enum Values: [global|under type|under parent]
+#    Defines how enum values are referenced.  The default is global.
+#    global       - Values are always global, referenced as 'value'.
+#    under type   - Values are under the enum type, referenced as
+#               'package.enum.value'.
+#    under parent - Values are under the enum's parent, referenced as
+#               'package.value'.
+#
+# Perl Package: [perl package]
+#    Specifies the Perl package used to fine-tune the language behavior in ways
+#    too complex to do in this file.
+#
+#------------------------------------------------------------------------------
+# For full language support only:
+#
+# Full Language Support: [perl package]
+#    Specifies the Perl package that has the parsing routines necessary for full
+#    language support.
+#
+#-------------------------------------------------------------------------------
+
+# The following languages are defined in the main file, if you'd like to alter
+# them:
+#
+#    Text File, Shebang Script, C/C++, C#, Java, JavaScript, Perl, Python,
+#    PHP, SQL, Visual Basic, Pascal, Assembly, Ada, Tcl, Ruby, Makefile,
+#    ActionScript, ColdFusion, R, Fortran
+
+# If you add a language that you think would be useful to other developers
+# and should be included in Natural Docs by default, please e-mail it to
+# languages [at] naturaldocs [dot] org.
+
+
+Alter Language: C/C++
+
+   Struct Prototype Ender: ;
diff --git a/doc/gen/Topics.txt b/doc/gen/Topics.txt
new file mode 100644
index 0000000..c825869
--- /dev/null
+++ b/doc/gen/Topics.txt
@@ -0,0 +1,90 @@
+Format: 1.51
+
+# This is the Natural Docs topics file for this project.  If you change anything
+# here, it will apply to THIS PROJECT ONLY.  If you'd like to change something
+# for all your projects, edit the Topics.txt in Natural Docs' Config directory
+# instead.
+
+
+# If you'd like to prevent keywords from being recognized by Natural Docs, you
+# can do it like this:
+# Ignore Keywords: [keyword], [keyword], ...
+#
+# Or you can use the list syntax like how they are defined:
+# Ignore Keywords:
+#    [keyword]
+#    [keyword], [plural keyword]
+#    ...
+
+
+#-------------------------------------------------------------------------------
+# SYNTAX:
+#
+# Topic Type: [name]
+# Alter Topic Type: [name]
+#    Creates a new topic type or alters one from the main file.  Each type gets
+#    its own index and behavior settings.  Its name can have letters, numbers,
+#    spaces, and these charaters: - / . '
+#
+# Plural: [name]
+#    Sets the plural name of the topic type, if different.
+#
+# Keywords:
+#    [keyword]
+#    [keyword], [plural keyword]
+#    ...
+#    Defines or adds to the list of keywords for the topic type.  They may only
+#    contain letters, numbers, and spaces and are not case sensitive.  Plural
+#    keywords are used for list topics.  You can redefine keywords found in the
+#    main topics file.
+#
+# Index: [yes|no]
+#    Whether the topics get their own index.  Defaults to yes.  Everything is
+#    included in the general index regardless of this setting.
+#
+# Scope: [normal|start|end|always global]
+#    How the topics affects scope.  Defaults to normal.
+#    normal        - Topics stay within the current scope.
+#    start         - Topics start a new scope for all the topics beneath it,
+#                    like class topics.
+#    end           - Topics reset the scope back to global for all the topics
+#                    beneath it.
+#    always global - Topics are defined as global, but do not change the scope
+#                    for any other topics.
+#
+# Class Hierarchy: [yes|no]
+#    Whether the topics are part of the class hierarchy.  Defaults to no.
+#
+# Page Title If First: [yes|no]
+#    Whether the topic's title becomes the page title if it's the first one in
+#    a file.  Defaults to no.
+#
+# Break Lists: [yes|no]
+#    Whether list topics should be broken into individual topics in the output.
+#    Defaults to no.
+#
+# Can Group With: [type], [type], ...
+#    Defines a list of topic types that this one can possibly be grouped with.
+#    Defaults to none.
+#-------------------------------------------------------------------------------
+
+# The following topics are defined in the main file, if you'd like to alter
+# their behavior or add keywords:
+#
+#    Generic, Class, Interface, Section, File, Group, Function, Variable,
+#    Property, Type, Constant, Enumeration, Event, Delegate, Macro,
+#    Database, Database Table, Database View, Database Index, Database
+#    Cursor, Database Trigger, Cookie, Build Target
+
+# If you add something that you think would be useful to other developers
+# and should be included in Natural Docs by default, please e-mail it to
+# topics [at] naturaldocs [dot] org.
+
+
+Topic Type: Struct
+
+   Plural: Structs
+   Class Hierarchy: Yes
+
+   Keywords:
+      struct
diff --git a/include/common/geom.h b/include/common/geom.h
index 4445998..a843c76 100644
--- a/include/common/geom.h
+++ b/include/common/geom.h
@@ -15,16 +15,24 @@
 typedef int32_t IntVector;
 
 /**
- * Type: CartesianVector
+ * Struct: CartesianVector
  * An abstract 2-D vector in cartesian coordinates.
+ *
+ * Fields:
+ *   x - the horizontal component
+ *   y - the vertical component
  */
 typedef struct {
   IntVector x, y;
 } CartesianVector;
 
 /**
- * Type: CartesianMapping
+ * Struct: CartesianMapping
  * A tuple of cartesian vectors representing a mapping.
+ *
+ * Fields:
+ *   origin - preimage vector
+ *   target - image vector
  */
 typedef struct {