diff --git a/README.md b/README.md
index 4acb262a..702464d0 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,24 @@
 # Attach to Trello Card action
 
-The purpose of this action is to enable attaching a pull request to a Trello card, from within the PR body.  This is best used with the Trello [Github Power-Up](https://trello.com/power-ups/55a5d916446f517774210004) added to your Trello Boards.  With that enabled, this effectively enables the "Attach Pull Request" action of the Power-Up, but from the Github side (and via a quick URL copy-paste instead of clicking through menus).
+The purpose of this action is to enable attaching a pull request to Trello cards, from within the PR body.  This is best used with the Trello [Github Power-Up](https://trello.com/power-ups/55a5d916446f517774210004) added to your Trello Boards.  With that enabled, this effectively enables the "Attach Pull Request" action of the Power-Up, but from the Github side (and via a quick URL copy-paste instead of clicking through menus).
 
-The action looks for a Trello card URL at the start of a Pull Request description.  If found, it will add the PR URL as an attachment to Trello.
+The action looks for Trello card URLs at the start of a Pull Request description.  If found, it will add the PR URL as an attachment to each specified card in Trello.
 
-Optionally, this can be configured to also attach a (redundant) PR comment with link/name, similar to what the Trello Power-up will do, for use cases requiring that.
+Optionally, this can be configured to also attach (redundant) PR comments with card links/names, similar to what the Trello Power-up will do, for use cases requiring that.
+
+## Link-Finding
+URLs need to each be on own line (leading/trailing whitespace and extra blank lines don't matter), and be at top of PR body.  URLs embedded in other text are ignored, as are URLs after descriptive (i.e., non-link) text starts.
+
+So, for :
+```text
+https://trello.com/c/aaaaaaaa
+
+https://trello.com/c/bbbbbbbbb
+This PR impl's the above 2 features.  These work similarly to feature https://trello.com/c/ccccccccc.  
+The below is a random trello url put in this body, for some reason:
+https://trello.com/c/dddddddd
+```
+only cards `aaaaaaaa` and `bbbbbbbbb` will have the PR attached.
 
 
 ## Events
@@ -46,3 +60,8 @@ jobs:
           # repo-token: ${{ secrets.GITHUB_TOKEN }}
 ```
 
+## Development Notes
+# Incrementing version
+1. Update version in package.json (format should be `X.X.X`, per semver)
+1. Commit/push changes
+1. Create release (and publish to marketplace) - use 'v'-prepended format for new tag and release name
\ No newline at end of file
diff --git a/index.js b/index.js
index 4df60e44..ac4d2fba 100644
--- a/index.js
+++ b/index.js
@@ -80,15 +80,33 @@ const addPrComment = async (body) => {
 };
 
 
-const extractTrelloCardId = (prBody) =>   {
-  core.debug(`pr body: ${prBody}`);  
+// to stop looking when we get to what looks like pr description, use stopOnNonLink true.  to allow interspersed lines of
+// yada yada yada b/w Trello links, use false.
+const extractTrelloCardIds = (prBody, stopOnNonLink = true) =>   {
+  core.debug(`prBody: ${util.inspect(prBody)}`);
   
-  //find 1st instance of trello card url - must be 1st thing in PR
-  const matches = /^\s*https\:\/\/trello\.com\/c\/(\w+)/.exec(prBody);
-  const cardId = matches && matches[1];
-  core.debug(`card id = ${cardId}`);
-
-  return cardId;
+  // browsers submit textareas with \r\n line breaks on all platforms
+  const browserEol = '\r\n';
+  // requires that link be alone own line, and allows leading/trailing whitespace
+  const linkRegex = /^\s*(https\:\/\/trello\.com\/c\/(\w+)\/\S+)?\s*$/;
+  
+  const cardIds = [];
+  const lines = prBody.split(browserEol);
+
+  //loop and gather up cardIds, skipping blank lines. stopOnNonLink == true will bust out when we're out of link-only territory.
+  for(const line of lines) {
+    const matches = linkRegex.exec(line);
+    if(matches) {
+      if(matches[2]) {
+        core.debug(`found id ${matches[2]}`);
+        cardIds.push(matches[2]);
+      }
+    } else if(stopOnNonLink) {
+      core.debug('matched something non-blank/link.  stopping search');
+      break;
+    }
+  };
+  return cardIds;
 }
 
 const commentsContainsTrelloLink = async (cardId) => {
@@ -111,36 +129,39 @@ const buildTrelloLinkComment = async (cardId) => {
        return;
     }
     
-    const cardId = extractTrelloCardId(evthookPayload.pull_request.body);
     const prUrl = evthookPayload.pull_request.html_url;
+    const cardIds = extractTrelloCardIds(evthookPayload.pull_request.body);
   
-    if(cardId) {
-      let extantAttachments;
+    if(cardIds && cardIds.length > 0) {
+      for(const cardId of cardIds) {   
+        let extantAttachments;
       
-      core.debug(`card url for ${cardId} specified in pr comment.`);
-      extantAttachments = await getCardAttachments(cardId);
-
-      //make sure not already attached
-      if(extantAttachments == null || !extantAttachments.some(it => it.url === prUrl)) {
-        const createdAttachment = await createCardAttachment(cardId, prUrl);
-        core.info(`created trello attachment.`);
-        core.debug(util.inspect(createdAttachment));
+        core.info(`card url for ${cardId} specified in pr.`);
+        extantAttachments = await getCardAttachments(cardId);
+
+        //make sure not already attached
+        if(extantAttachments == null || !extantAttachments.some(it => it.url === prUrl)) {
+          const createdAttachment = await createCardAttachment(cardId, prUrl);
+          core.info(`created trello attachment for card ${cardId}.`);
+          core.debug(util.inspect(createdAttachment));
         
-        // BRH NOTE actually, the power-up doesn't check if it previously added comment, so check is maybe superfluous
-        if(shouldAddPrComment && !await commentsContainsTrelloLink(cardId)) {
-          core.debug('adding pr comment');
-          const newComment = await buildTrelloLinkComment(cardId)
-
-                    //comments as 'github actions' bot, at least when using token automatically generated for GH workflows
-          await addPrComment(newComment);
+          // BRH NOTE actually, the power-up doesn't check if it previously added comment, so this doesn't exactly match
+          //  its fxnality.
+          if(shouldAddPrComment && !await commentsContainsTrelloLink(cardId)) {
+            core.debug(`adding pr comment for card ${cardId}.`);
+            const newComment = await buildTrelloLinkComment(cardId)
+
+            //comments as 'github actions' bot, at least when using token automatically generated for GH workflows
+            await addPrComment(newComment);
+          } else {
+            core.info(`pr comment already present or unwanted for card ${cardId} - skipped comment add.`);
+          }
         } else {
-          core.info('pr comment already present or unwanted - skipped comment add.');
+          core.info(`trello attachment for card ${cardId} already exists - skipped attachment create.`);
         }
-      } else {
-        core.info('trello attachement already exists - skipped create.');
-      }
+      };
     } else {
-      core.info(`no card url in pr comment. nothing to do.`);
+      core.info(`no card urls in pr comment. nothing to do.`);
     }
   } catch (error) {
     core.error(util.inspect(error));
diff --git a/package.json b/package.json
index 53b1d7e7..c982d336 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "attach-to-trello-card-action",
-  "version": "1.0.0",
+  "version": "2.0.0",
   "description": "Github Action: Add attachment to a given Trello card URL (e.g., pull request)",
   "main": "index.js",
   "scripts": {