Add global docs

docs/global.md

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+# Global
+This section covers qTips **global options**, which effect every qTip created on the page, both past and future.
+
+<a name="version"></a>
+## $.fn.qtip.version
+Stores the version of qTip2 library included on the page in the format "2.x.x".
+
+<a name="defaults"></a>
+## $.fn.qtip.defaults
+Holds all the default qTip values inherited by your .qtip() calls.
+
+### Value
+```js
+$.fn.qtip.defaults = {
+	prerender: false,
+	id: false,
+	overwrite: true,
+	suppress: true,
+	content: {
+		text: true,
+		attr: 'title',
+		title: {
+			text: false,
+			button: false
+		}
+	},
+	position: {
+		my: 'top left',
+		at: 'bottom right',
+		target: false,
+		container: false,
+		viewport: false,
+		adjust: {
+			x: 0, y: 0,
+			mouse: true,
+			resize: true,
+			method: 'flip flip'
+		},
+		effect: function(api, pos, viewport) {
+			$(this).animate(pos, {
+				duration: 200,
+				queue: false
+			});
+		}
+	},
+	show: {
+		target: false,
+		event: 'mouseenter',
+		effect: true,
+		delay: 90,
+		solo: false,
+		ready: false,
+		modal: {
+			on: false,
+			effect: true,
+			blur: true,
+			escape: true
+		}
+	},
+	hide: {
+		target: false,
+		event: 'mouseleave',
+		effect: true,
+		delay: 0,
+		fixed: false,
+		inactive: false,
+		leave: 'window',
+		distance: false
+	},
+	style: {
+		classes: '',
+		widget: false,
+		width: false,
+		height: false,
+		tip: {
+			corner: true,
+			mimic: false,
+			width: 8,
+			height: 8,
+			border: true,
+			offset: 0
+		}
+	},
+	events: {
+		render: null,
+		move: null,
+		show: null,
+		hide: null,
+		toggle: null,
+		visible: null,
+		focus: null,
+		blur: null
+	}
+};
+```
+
+### Notes
+* Take a look at the [Override defaults](./tutorials/advanced#override) tutorial for details on how to edit this object properly.
+
+
+<a name="nextid"></a>
+## $.fn.qtip.nextid
+
+### Overview
+Determines the base numeric identifier assigned to future qTips. At document load this is set to *zero*, and is incremented for each successive qTip
+created. This identifier is used to retrieve qTips by their corresponding 'id' attr in the form of &quot;ui-tooltip-*&lt;i&gt;*&quot;
+
+### Examples
+We can start our qTip ID at a higher number, such as 100:
+```js
+// Set the nextid global option
+$.fn.qtip.nextid = 100;
+
+/*
+ * This qTip will have an ID of "ui-tooltip-100"
+ * All qTips created after will have ID values greater than 100
+ */
+$('.selector').qtip({
+	content: {
+		text: 'My tooltip content'
+	}
+});
+```
+
+### See also
+* [id option](./docs/core/#id)
+
+### Notes
+* This **MUST** be an *integer only!* If you want to assign a string as an identifier, check-out the individual [id option](./core.md#id).
+
+
+
+<a name="inactiveEvents"></a>
+## $.fn.qtip.inactiveEvents
+
+### Value
+["click", "dblclick", "mousedown", "mouseup", "mousemove", "mouseleave", "mouseenter"]
+
+### Overview
+An array of events which, when triggered on the qTip, cause it to become &quot;active&quot; i.e. no longer inactive, and reset the inactive timer
+assigned to it (if any) by the defined [inactive](./hide.md#inactive) option.
+
+### Examples
+Let's create a tooltip which hides when it becomes inactive for 3 seconds, inactive in this case meaning when it isn't clicked.
+
+```js
+// Set tooltips to only become active when clicked
+$.fn.qtip.inactiveEvents = ["click"];
+
+// Create a tooltip that will hide after 3 seconds if it isn't clicked
+$('.selector').qtip({
+	content: {
+		text: 'My tooltip content'
+	},
+	hide: {
+		inactive: 3000
+	}
+});
+```
+
+### See also
+* [hide.inactive](./docs/hide/#inactive)
+
+### Notes
+* This effects all qTips on the page, included those already created (but only if you happen to update a setting which cause the event handlers to be rebound).
+
+
+<a name="zindex"></a>
+## $.fn.qtip.zindex
+
+### Values
+Integer *(Default: 15000)*
+
+### Overview
+Determines the base z-index of all qTips on the page of which no qTip z-index will drop below.
+
+### Examples
+If you're using another plugin that happens to use a higher z-index than the qTip default, increase it a little:
+
+```js
+// Now your qTip's appear above the other plugin elements, yipeee!
+$.fn.qtip.zindex = 20000;
+```
+
+### See also
+* [modal.zindex](./plugins/modal.md#zindex)
+
+### Notes
+* Updating this option **after** you've already created some tooltips can have some pretty weird after-effects. Try to avoid it!