Converting Notes into a Library Module?

[damned]

Generally all of these things are defined in 2 or 3 places.
Getting notepad++ and using the Find In Files search feature is going to be your friend here.

\extension.xml introduces all your files
\campaign\record_char.xml introduces the new tab

<!--   Added new MoreCore Tab to the Character Sheet -->
<!--   "more" is a reference only. charsheet_more refers to <windowclass name="charsheet_more"> which is found in the \campaign\record_char_more.xml file  -->
			<subwindow name="more">
				<bounds>0,65,-1,-20</bounds>
				<class>charsheet_more</class>
			</subwindow>

you would then do searches on more abd charsheet_more
you would find
\campaign\record_char.xml which defines the new tab/sheet and has several fields dfined within.
its fairly well commented

<?xml version="1.0" encoding="iso-8859-1"?>

<!-- 
  Please see the license.html file included with this distribution for 
  attribution and copyright information.
-->

<root>
<!-- New WindowClass "charsheet_more" -->
	<windowclass name="charsheet_more">
		<sheetdata>
<!-- New Frame taken from the record_char_notes.xml file  -->
			<frame_char name="detailframe">
				<bounds>15,0,-29,45</bounds>
			</frame_char>
			<string_labeled name="race">
				<anchored to="detailframe" position="insidetopleft" offset="15,10" width="150" height="20" />
				<labelres>char_label_race</labelres>
			</string_labeled>
			<string_labeled name="gender">
				<anchored to="race" position="right" offset="5,0" width="70" />
				<labelres>char_label_gender</labelres>
			</string_labeled>
			<string_labeled name="age">
				<anchored to="gender" position="right" offset="5,0" width="70" />
				<labelres>char_label_age</labelres>
			</string_labeled>
			<string_labeled name="height">
				<anchored to="age" position="right" offset="5,0" width="70" />
				<labelres>char_label_height</labelres>
			</string_labeled>
			<string_labeled name="weight">
				<anchored to="height" position="right" offset="5,0" width="70" />
				<labelres>char_label_weight</labelres>
			</string_labeled>

<!-- New Frame for recording Attack Strings. 5 lines long, will scroll to more than 5 lines but cant double-click them if they go over 5 lines as it loses focus between clicks on lines 6+  -->
			<!-- Attack Frame by damned -->
<!-- Frame Co-ordinates  -->
			<frame_char name="attackframe">
				<bounds>15,45,320,170</bounds>
			</frame_char>
<!-- Frame Anchor point and Label -->
			<label_frametop>
				<anchored to="attackframe" />
<!-- Label Text is found in /strings/strings_morecore.xml -->
				<static textres="pc_label_attack" />
			</label_frametop>
<!-- Blank lines for recording your attack strings  -->
<!-- My suggestions for attack and damage strings are:
     Fit Attack and Damage on one line
     Use Syntax: [A] Weapon Dice, [D] Weapon Dice,
     You can only use standard dice (d4, d6, d8, d10, d12, d20 and modifiers -->
			<stringu name="attacks" source="attacks">
				<anchored to="attackframe">
					<top offset="30" />
					<left offset="15" />
					<right offset="-20" />
					<bottom offset="-5" />
				</anchored>
				<multilinespacing>20</multilinespacing>
				<!-- npc_attack.lua allows us to introduce the Attacker and Targets names to the Chat Window Result -->
				<script file="campaign/scripts/npc_attack.lua" />
			</stringu>
			<scrollbar_list>
				<anchored to="attacks" />
				<target>attacks</target>
			</scrollbar_list>
			<!-- End Attack Frame by damned -->
<!-- New Frame for recording Attack Strings. 5 lines long, will scroll to more than 5 lines but cant double-click them if they go over 5 lines as it loses focus between clicks on lines 6+  -->
			<!-- Combat Frame by damned -->
<!-- Frame Co-ordinates  -->
			<frame_char name="combatframe">
				<bounds>335,45,-29,170</bounds>
			</frame_char>
<!-- Frame Anchor point and Label -->
			<label_frametop>
				<anchored to="combatframe" />
<!-- Label Text is found in /strings/strings_morecore.xml -->
				<static textres="pc_label_combat" />
			</label_frametop>
<!-- This field is linked to Column 1 (health) field in MoreCore CT -->
<!-- Label Text is found in /strings/strings_morecore.xml -->
<!-- CombatTracker files are /ct/ct_client.xml and /ct/ct_host.xml -->
<!-- Script to Link this field to CT field is in /ct/scripts/ct_entry.lua 
     function linkPCFields()
     specific line is: health.setLink(nodeChar.createChild("health", "number"), true);
	 -->
			<number_ctlink name="health" source="health">
				<anchored to="combatframe" position="insidetopleft" offset="110,28" />
				<tooltip textres="pc_tooltip_health" />
			</number_ctlink>
<!-- Label Text is found in /strings/strings_morecore.xml -->
			<string_useredit name="pc_label_health">
				<anchored to="combatframe" position="insidetopleft" offset="10,31" />
				<default>Health</default>
				<tooltip textres="label_editable" />
			</string_useredit>

<!-- This field is linked to Column 2 (defence) field in MoreCore CT -->
<!-- Label Text is found in /strings/strings_morecore.xml -->
<!-- CombatTracker files are /ct/ct_client.xml and /ct/ct_host.xml -->
<!-- Script to Link this field to CT field is in /ct/scripts/ct_entry.lua 
     function linkPCFields()
     specific line is: health.setLink(nodeChar.createChild("health", "number"), true);
	 -->
			<number_ctlink name="defence" source="defence">
				<anchored to="combatframe" position="insidetopleft" offset="110,49" />
				<tooltip textres="pc_tooltip_defence" />
			</number_ctlink>
<!-- Label Text is found in /strings/strings_morecore.xml -->
			<string_useredit name="pc_label_defence">
				<anchored to="combatframe" position="insidetopleft" offset="10,52" />
				<default>Defence</default>
				<tooltip textres="label_editable" />
			</string_useredit>

<!-- This field is linked to Wounds (User Defineable) field in MoreCore CT -->
<!-- Label Text is found in /strings/strings_morecore.xml -->
<!-- CombatTracker files are /ct/ct_client.xml and /ct/ct_host.xml -->
<!-- Script to Link this field to CT field is in /ct/scripts/ct_entry.lua 
     function linkPCFields()
     specific line is: wounds.setLink(nodeChar.createChild("wounds", "number"), true);
			<number_charwounds name="wounds" source="wounds">
				<anchored to="combatframe" position="insidetopleft" offset="110,70" />
				<tooltip textres="pc_tooltip_four" />
			</number_charwounds>
	 -->
<!-- Label Text is found in /strings/strings_morecore.xml -->
			<string_useredit name="pc_label_wounds">
				<anchored to="combatframe" position="insidetopleft" offset="10,73" />
				<default>Wounds</default>
				<tooltip textres="label_editable" />
			</string_useredit>
			
<!-- This field is linked to Column 4 (User Defineable) field in MoreCore CT -->
<!-- Label Text is found in /strings/strings_morecore.xml -->
<!-- CombatTracker files are /ct/ct_client.xml and /ct/ct_host.xml -->
<!-- Script to Link this field to CT field is in /ct/scripts/ct_entry.lua 
     function linkPCFields()
     specific line is: health.setLink(nodeChar.createChild("health", "number"), true);
	 -->
			<number_ctlink name="four" source="four">
				<anchored to="combatframe" position="insidetopleft" offset="110,91" />
				<tooltip textres="pc_tooltip_four" />
			</number_ctlink>
<!-- Label Text is found in /strings/strings_morecore.xml -->
			<string_useredit name="pc_label_four">
				<anchored to="combatframe" position="insidetopleft" offset="10,94" />
				<default>C4</default>
				<tooltip textres="label_editable" />
			</string_useredit>
			
<!-- This field is linked to Column 5 (User Defineable) field in MoreCore CT -->
<!-- Label Text is found in /strings/strings_morecore.xml -->
<!-- CombatTracker files are /ct/ct_client.xml and /ct/ct_host.xml -->
<!-- Script to Link this field to CT field is in /ct/scripts/ct_entry.lua 
     function linkPCFields()
     specific line is: health.setLink(nodeChar.createChild("health", "number"), true);
	 -->
			<number_ctlink name="five" source="five">
				<anchored to="combatframe" position="insidetopleft" offset="110,112" />
				<tooltip textres="pc_tooltip_five" />
			</number_ctlink>
<!-- Label Text is found in /strings/strings_morecore.xml -->
			<string_useredit name="pc_label_five">
				<anchored to="combatframe" position="insidetopleft" offset="10,115" />
				<default>C5</default>
				<tooltip textres="label_editable" />
			</string_useredit>

			<!-- This field is linked to Order field in MoreCore CT -->
<!-- Label Text is found in /strings/strings_morecore.xml -->
<!-- CombatTracker files are /ct/ct_client.xml and /ct/ct_host.xml -->
<!-- Players can roll and update their INIT/Order here - they do not have rights to edit CT direct -->
			<number_ctlink name="initresult" source="initresult">
				<anchored to="combatframe" position="insidetopleft" offset="110,133" />
				<tooltip textres="pc_tooltip_order" />
			</number_ctlink>
<!-- Label Text is found in /strings/strings_morecore.xml -->
			<string_useredit name="pc_label_order">
				<anchored to="combatframe" position="insidetopleft" offset="10,136" />
				<default>Order</default>
				<tooltip textres="label_editable" />
			</string_useredit>

			<!-- End Combat Frame by damned -->





<!-- New Frame for recording Additional (most commonly used) Abilities similar to char_record_main.xml.
     WIP as at 20150308 -->
			<!-- PrimarySttributes Frame by damned -->
<!-- Frame Co-ordinates  -->
			<frame_char name="primaryattributesframe">
				<bounds>15,215,-29,-5</bounds>
			</frame_char>
			<label_frametop>
				<anchored to="primaryattributesframe" />
				<static textres="char_label_primaryattributes" />
			</label_frametop>


			
		</sheetdata>
	</windowclass>
</root>

[damned]

Do you want the CharSheet to be expandable or make it bigger to start with (this is usually better for CharSheets)?

\campaign\record_char.xml includes the following code that sets the size

	<windowclass name="charsheet">
		<frame>charsheet</frame>
		<placement>
			<size width="525" height="568" />
		</placement>

I hope that gets you started on the right road...

[Jingo]

Well, I think I'm figuring it out... more or less. I was able to modify the charsheet size and also made it expandable. I was feeling very claustrophobic before.
I'm currently trying my hand at my own tab using your MoreCore extension as a guide.
Thanks again.

[damned]

Having an expandable Story or Tables or Image frame makes sense.
But the CharSheet has so many specifically positioned elements that I think you will find having a set size is a better option.
Just my 2c worth.