Add a node to a tree. Adds the specified node to the parent. If the child argument is not NULL, puts the new node before or after the specified child depending on the value of the where argument. If the child argument is NULL, puts the new node at the beginning of the child list (MXML_ADD_BEFORE) or at the end of the child list (MXML_ADD_AFTER). The constant MXML_ADD_TO_PARENT can be used to specify a NULL child pointer.mxml_node_t *Parent node intWhere to add, MXML_ADD_BEFORE or MXML_ADD_AFTER mxml_node_t *Child node for where or MXML_ADD_TO_PARENT mxml_node_t *Node to add Delete a node and all of its children. If the specified node has a parent, this function first removes the node from its parent using the mxmlRemove() function.mxml_node_t *Node to delete Attribute value or NULLconst char * Get an attribute. This function returns NULL if the node is not an element or the named attribute does not exist.mxml_node_t *Element node const char *Name of attribute Set an attribute. If the named attribute already exists, the value of the attribute is replaced by the new string value. The string value is copied into the element node. This function does nothing if the node is not an element.mxml_node_t *Element node const char *Name of attribute const char *Attribute value Element node or NULLmxml_node_t * Find the named element. The search is constrained by the name, attribute name, and value; any NULL names or values are treated as wildcards, so different kinds of searches can be implemented by looking for all elements of a given name or all elements with a specific attribute. The descend argument determines whether the search descends into child nodes; normally you will use MXML_DESCEND_FIRST for the initial search and MXML_NO_DESCEND to find additional direct descendents of the node. The top node argument constrains the search to a particular node's children.mxml_node_t *Current node mxml_node_t *Top node const char *Element name or NULL for any const char *Attribute name, or NULL for none const char *Attribute value, or NULL for any intDescend into tree - MXML_DESCEND, MXML_NO_DESCEND, or MXML_DESCEND_FIRST First node or NULL if the file could not be read.mxml_node_t * Load a file into an XML node tree. The nodes in the specified file are added to the specified top node. If no top node is provided, the XML file MUST be well-formed with a single parent node like <?xml> for the entire file. The callback function returns the value type that should be used for child nodes. If MXML_NO_CALLBACK is specified then all child nodes will be either MXML_ELEMENT or MXML_TEXT nodes.mxml_node_t *Top node FILE *File to read from mxml_type_tCallback function or MXML_NO_CALLBACK New nodemxml_node_t * Create a new element node. The new element node is added to the end of the specified parent's child list. The constant MXML_NO_PARENT can be used to specify that the new element node has no parent.mxml_node_t *Parent node or MXML_NO_PARENT const char *Name of element New nodemxml_node_t * Create a new integer node. The new integer node is added to the end of the specified parent's child list. The constant MXML_NO_PARENT can be used to specify that the new integer node has no parent.mxml_node_t *Parent node or MXML_NO_PARENT intInteger value New nodemxml_node_t * Create a new opaque string. The new opaque node is added to the end of the specified parent's child list. The constant MXML_NO_PARENT can be used to specify that the new opaque node has no parent. The opaque string must be nul-terminated and is copied into the new node.mxml_node_t *Parent node or MXML_NO_PARENT const char *Opaque string New nodemxml_node_t * Create a new real number node. The new real number node is added to the end of the specified parent's child list. The constant MXML_NO_PARENT can be used to specify that the new real number node has no parent.mxml_node_t *Parent node or MXML_NO_PARENT doubleReal number value New nodemxml_node_t * Create a new text fragment node. The new text node is added to the end of the specified parent's child list. The constant MXML_NO_PARENT can be used to specify that the new text node has no parent. The whitespace parameter is used to specify whether leading whitespace is present before the node. The text string must be nul-terminated and is copied into the new node.mxml_node_t *Parent node or MXML_NO_PARENT int1 = leading whitespace, 0 = no whitespace const char *String Remove a node from its parent. Does not free memory used by the node - use mxmlDelete() for that. This function does nothing if the node has no parent.mxml_node_t *Node to remove 0 on success, -1 on error.int Save an XML tree to a file. The callback argument specifies a function that returns a whitespace character or nul (0) before and after each element. If MXML_NO_CALLBACK is specified, whitespace will only be added before MXML_TEXT nodes with leading whitespace and before attribute names inside opening element tags.mxml_node_t *Node to write FILE *File to write to intWhitespace callback or MXML_NO_CALLBACK Next node or NULLmxml_node_t * Walk to the next logical node in the tree. The descend argument controls whether the first child is considered to be the next node. The top node argument constrains the walk to the node's children.mxml_node_t *Current node mxml_node_t *Top node intDescend into tree - MXML_DESCEND, MXML_NO_DESCEND, or MXML_DESCEND_FIRST Previous node or NULLmxml_node_t * Walk to the previous logical node in the tree. The descend argument controls whether the previous node's last child is considered to be the previous node. The top node argument constrains the walk to the node's children.mxml_node_t *Current node mxml_node_t *Top node intDescend into tree - MXML_DESCEND, MXML_NO_DESCEND, or MXML_DESCEND_FIRST An XML element attribute value.char *Attribute name char *Attribute value An XML element attribute value.struct mxml_attr_s An XML element value.struct mxml_value_s Data types...mxml_node_t *First child node mxml_node_t *Last child node mxml_node_t *Next node under same parent mxml_node_t *Parent node mxml_node_t *Previous node under same parent mxml_type_tNode type mxml_value_tNode value struct mxml_node_sAn XML node.An XML node. An XML text value.char *Fragment string intLeading whitespace? An XML text value.struct mxml_text_s The XML node type.XML element with attributes Integer value Opaque string Real value Text fragment The XML node type.enum mxml_type_e An XML element value.mxml_attr_t *Attributes char *Name of element intNumber of attributes An XML node value.union mxml_value_u An XML node value.mxml_element_tElement intInteger number char *Opaque string doubleReal number mxml_text_tText fragment