Clarification of Singularity costs inside BN4 (#2403)

- change BN description to highlight SF levels impact other BN use of singularity functions
 - add detail to singularity API description to highlight the same

markdown/bitburner.singularity.md

@@ -14,7 +14,7 @@ export interface Singularity
 
 ## Remarks
 
-This API requires Source-File 4 to use. The RAM cost of all these functions is multiplied by 16/4/1 based on Source-File 4 levels.
+This API requires Source-File 4 to use outside of BitNode 4. Additionally, outside of BitNode 4 the RAM cost of all these functions is multiplied by 16/4/1 based on Source-File 4 levels.
 
 ## Methods
 

src/BitNode/BitNode.tsx

@@ -171,8 +171,8 @@ export function initBitNodes() {
     ),
     (
       <>
-        This Source-File lets you access and use the Singularity functions in other BitNodes. Each level of this
-        Source-File reduces the RAM cost of singularity functions:
+        This Source-File lets you access and use the Singularity functions outside of this BitNode. Each level of this
+        Source-File reduces the RAM cost of singularity functions in other BitNodes:
         <ul>
           <li>Level 1: 16x</li>
           <li>Level 2: 4x</li>

src/ScriptEditor/NetscriptDefinitions.d.ts

@@ -1861,7 +1861,7 @@ export interface BitNodeBooleanOptions {
 /**
  * Singularity API
  * @remarks
- * This API requires Source-File 4 to use. The RAM cost of all these functions is multiplied by 16/4/1 based on
+ * This API requires Source-File 4 to use outside of BitNode 4. Additionally, outside of BitNode 4 the RAM cost of all these functions is multiplied by 16/4/1 based on
  * Source-File 4 levels.
  * @public
  */