diff --git a/src/components/EditorBody.vue b/src/components/EditorBody.vue
index 338b61f..5e9a8b8 100644
--- a/src/components/EditorBody.vue
+++ b/src/components/EditorBody.vue
@@ -8,10 +8,6 @@
       @click="jumpGoto"
       :highlight="gotoHighlights.state.highlight"
     />
-    <ErrorOverlay
-      v-if="errorHighlights.state.highlight"
-      :highlight="errorHighlights.state.highlight"
-    />
   </div>
 </template>
 
@@ -27,7 +23,6 @@ import {
 } from '../state/state'
 import { isSyncing } from '../utils/tabs'
 import GotoOverlay from './GotoOverlay.vue'
-import ErrorOverlay from './ErrorOverlay.vue'
 
 import { EditorView } from 'codemirror'
 import { darkTheme, editorTheme, lightTheme } from '../utils/lezer-mips'
diff --git a/src/components/ErrorOverlay.vue b/src/components/ErrorOverlay.vue
deleted file mode 100644
index da18adc..0000000
--- a/src/components/ErrorOverlay.vue
+++ /dev/null
@@ -1,29 +0,0 @@
-<template>
-  <div
-    class="absolute h-6 border-b-2 border-red-500 bg-red-500 bg-opacity-25 group"
-    :style="{
-      top: `${props.lineHeight * props.highlight.line}px`,
-      left: `${props.highlight.offset}px`,
-      width: `${props.highlight.size}px`,
-    }"
-  >
-    <div
-      v-if="props.highlight.message"
-      class="mt-6 py-2 px-4 w-auto dark:bg-neutral-900 bg-neutral-200 rounded shadow-xl absolute z-30 text-red-400 font-medium font-sans hidden group-hover:block"
-    >
-      {{ props.highlight.message }}
-    </div>
-  </div>
-</template>
-
-<script setup lang="ts">
-import { Highlights } from '../utils/highlights'
-
-const props = withDefaults(
-  defineProps<{
-    highlight: Highlights
-    lineHeight?: number
-  }>(),
-  { lineHeight: 24 }
-)
-</script>
diff --git a/src/components/ExportModal.vue b/src/components/ExportModal.vue
index f1c1885..f25ccf0 100644
--- a/src/components/ExportModal.vue
+++ b/src/components/ExportModal.vue
@@ -156,7 +156,7 @@ async function exportRegions() {
     return
   }
 
-  const result = await backend.assembleRegions(collectLines(current.lines), current.path, state)
+  const result = await backend.assembleRegions(current.doc, current.path, state)
 
   if (result.regions) {
     switch (result.regions.type) {
diff --git a/src/components/console/ConsoleTab.vue b/src/components/console/ConsoleTab.vue
index 617a10f..a5dbe6c 100644
--- a/src/components/console/ConsoleTab.vue
+++ b/src/components/console/ConsoleTab.vue
@@ -107,7 +107,7 @@ function makeEditor(): Editor {
     )
   }
 
-  return new Editor(consoleData.console, cursor, () => {}, writable)
+  return new Editor(consoleData.console, cursor, writable)
 }
 
 const state = reactive({
diff --git a/src/state/state.ts b/src/state/state.ts
index b0b578a..8e2211c 100644
--- a/src/state/state.ts
+++ b/src/state/state.ts
@@ -2,17 +2,13 @@ import { useSettings } from '../utils/settings'
 import { useHighlights } from '../utils/highlights'
 import { regular } from '../utils/query/text-size'
 import { useStorage } from '../utils/storage'
-
 import { useTabs } from '../utils/tabs'
 import { GotoMessage, useGoto } from '../utils/goto'
 import { ref } from 'vue'
+import { InstructionLine } from '../utils/mips/mips'
 
 export const settings = useSettings()
 
-function widthQuery(text: string) {
-  return regular.calculate(text).width
-}
-
 export const {
   tabsState,
   tab,
@@ -23,17 +19,14 @@ export const {
   showSettings
 } = useTabs()
 
-export const errorHighlights = useHighlights(widthQuery)
-export const gotoHighlights = useHighlights<GotoMessage>(widthQuery)
+export const errorHighlights = useHighlights()
+export const gotoHighlights = useHighlights<GotoMessage>()
 
 
-const storageResult = useStorage(errorHighlights, tab, onDirty)
+const storageResult = useStorage(errorHighlights, tab)
 
 export const { editor, storage, suggestionsStorage } = storageResult
 
-function onDirty(line: number, deleted: number, insert: string[]) {
-
-}
 // watch(() => {
 //   // const cursor = cursorIndex()
 //   // const line = tab()?.lines[cursor.line]
@@ -46,3 +39,5 @@ function onDirty(line: number, deleted: number, insert: string[]) {
 export const goto = useGoto(gotoHighlights, storageResult)
 
 export const showExportRegionsDialog = ref(false)
+
+export const buildLines = ref(null as InstructionLine[] | null)
diff --git a/src/utils/editor.ts b/src/utils/editor.ts
index d40d418..b08f790 100644
--- a/src/utils/editor.ts
+++ b/src/utils/editor.ts
@@ -178,8 +178,6 @@ export class Editor {
     body()
 
     this.redoOperations = []
-
-    this.onDirty(line, count, this.data.slice(line, line + insert))
   }
 
   public mutateLine(line: number, body: () => void) {
@@ -205,7 +203,6 @@ export class Editor {
       frame.replaced,
       ...frame.deleted
     )
-    this.onDirty(frame.index, frame.replaced, frame.deleted)
 
     return {
       index: frame.index,
@@ -516,7 +513,6 @@ export class Editor {
   constructor(
     public data: LineData,
     public cursor: SelectionIndex,
-    public onDirty: DirtyHandler = () => {},
     public writable?: (
       start: number,
       deleted: number,
diff --git a/src/utils/events.ts b/src/utils/events.ts
index 4dd3d9f..c8928fa 100644
--- a/src/utils/events.ts
+++ b/src/utils/events.ts
@@ -293,7 +293,7 @@ export async function setupEvents() {
         if (current?.uuid === tab.uuid) {
           editor.value.replaceAll(modification.data)
         } else {
-          tab.lines = splitLines(modification.data)
+          tab.doc = modification.data
         }
 
         tab.marked = false
diff --git a/src/utils/goto.ts b/src/utils/goto.ts
index 97da9ac..8f7ba75 100644
--- a/src/utils/goto.ts
+++ b/src/utils/goto.ts
@@ -17,7 +17,6 @@ export interface GotoMessage {
 
 export interface GotoInterface {
   dismiss(): void
-  hover(line: number, index: number): void
   jump(): SelectionIndex | null
 }
 
@@ -59,50 +58,6 @@ export function useGoto(
     highlights.dismissHighlight()
   }
 
-  function hover(line: number, index: number) {
-    highlights.dismissHighlight()
-
-    const tokens = storage.storage.highlights[line]
-    const tokenIndex = findTokenIndex(tokens, index)
-
-    if (tokenIndex === null) {
-      return
-    }
-
-    let match: SearchStorageResult | null
-
-    if (cache && cache.line === line && cache.index === tokenIndex) {
-      match = cache.match
-    } else {
-      const token = tokens[tokenIndex]
-      const text = token.text.trim()
-
-      const suggestions = storage.suggestionsStorage()
-      // I don't care about the performance of this feature too much
-      match = searchStorage(text, suggestions.body)
-
-      cache = {
-        line: line,
-        index: tokenIndex,
-        token,
-        match,
-      }
-    }
-
-    if (!match) {
-      return
-    }
-
-    const message: GotoMessage = {
-      label: match.suggestion.replace,
-      line: match.line,
-      index: match.suggestion.index,
-      type: match.suggestion.type,
-    }
-
-    highlights.putHighlight(line, tokenIndex, tokens, message)
-  }
-
   function jump(): SelectionIndex | null {
     highlights.dismissHighlight()
 
@@ -119,7 +74,6 @@ export function useGoto(
 
   return {
     dismiss,
-    hover,
     jump,
   }
 }
diff --git a/src/utils/highlights.ts b/src/utils/highlights.ts
index 8037960..f2de704 100644
--- a/src/utils/highlights.ts
+++ b/src/utils/highlights.ts
@@ -5,6 +5,7 @@ type DefaultMessage = string
 export interface Highlights<Message = DefaultMessage> {
   line: number
   offset: number
+  size: number
   message: Message
 }
 
@@ -35,7 +36,7 @@ export function useHighlights<Message = DefaultMessage>(): HighlightsResult<Mess
     index: number,
     message: UnwrapRef<Message>
   ) {
-    state.highlight = { line, message, offset: index }
+    state.highlight = { line, message, offset: index, size: 0 }
   }
 
   function dismissHighlight() {
diff --git a/src/utils/storage.ts b/src/utils/storage.ts
index a82ad2f..dc35352 100644
--- a/src/utils/storage.ts
+++ b/src/utils/storage.ts
@@ -27,7 +27,6 @@ type ShiftCallback = (line: number, deleted: number, insert: string[]) => void
 export function useStorage(
   error: HighlightsInterface,
   tab: () => EditorTab | null,
-  dirty: ShiftCallback = () => {}
 ): StorageResult {
   const storage = reactive({
     editor: createEditor(),
@@ -38,17 +37,6 @@ export function useStorage(
   // Not reactive.
   let suggestions = new SuggestionsStorage()
 
-  function highlight(line: number, deleted: number, lines: string[]) {
-    const result = lines.map((part) => storage.language.highlight(part))
-
-    storage.highlights.splice(line, deleted, ...result.map((x) => x.tokens))
-    suggestions.update(
-      line,
-      deleted,
-      result.map((x) => x.suggestions)
-    )
-  }
-
   async function checkSyntax() {
     const current = tab()
 
@@ -77,59 +65,12 @@ export function useStorage(
     }
   }
 
-  function shiftBreakpoints(line: number, deleted: number, replaced: number) {
-    const current = tab()
-
-    if (!current) {
-      return
-    }
-
-    const breakpoints = current.breakpoints
-
-    let moved = false
-
-    for (let a = 0; a < breakpoints.length; a++) {
-      const bp = breakpoints[a]
-
-      if (bp < line + Math.min(deleted, replaced)) {
-      } else if (deleted > replaced && bp < line + deleted) {
-        breakpoints.splice(a, 1)
-        a -= 1
-      } else {
-        breakpoints[a] += replaced - deleted
-        moved = true
-      }
-    }
-
-    if (moved) {
-      current.breakpoints = [...new Set(current.breakpoints)]
-    }
-  }
-
-  function handleDirty(line: number, deleted: number, lines: string[]) {
-    highlight(line, deleted, lines)
-
-    const current = tab()
-
-    if (current) {
-      current.marked = true
-    }
-
-    error.shiftHighlight(line, deleted, lines.length)
-    shiftBreakpoints(line, deleted, lines.length)
-
-    dirty(line, deleted, lines)
-
-    dispatchCheckSyntax()
-  }
-
   function createEditor(): Editor {
     const current = tab()
 
     return new Editor(
       current?.state.doc.toString().split("\n") ?? ['Nothing yet.'],
       { line: 0, index: 0 },
-      handleDirty,
       current?.writable ?? false ? undefined : () => false // weird
     )
   }